Hi!
I wanted to try nativeSD for my HD2, and have tired to partition the card.
As a result the card can't be partitioned/formatted correctly any more.
What I did:
Started with a regular fat32 formatted and working Sandisk Ultra-1 32gb microSD card.
Booted Ubuntu 10 (and 12 later on) in VMware (connected the usb card reader to the VM), tried partitioning with gparted and the built in disk utility.
After applying the new partition layout (4gb EXT4, 25gb FAT32) gparted and disk utility both stalled.
I tried multiple times, even tried to go back to just one FAT32 partition, no luck.
Then I turned to windows tools Easeus Partition Master and MiniTool Partition Wizard. They will erase the partitions, but just stall when creating the new one.
My Nikon d90 will happily format the card to 32gb, but I can't write any data successfully to it. Same with Windows disk management.
I tried 4EXT recovery, and I get a bit further, but it also hangs on creating one of the partitions. I can see that the new partitions in miniTools/Easeus.
What do I do? I'm sure this is a soft error, but how to get the card back in working order?
TLDR; fudged partitions, how to get a working card back?
how bout regenerate da sector bit by bit again, seems like some sector damaged leaving da sd a 'scar' to rewrite data,try using regenerate software such as hdd regenerator or others. but... it ll take some....not some, but much of ur time to wait, but maybe it worth it
compacity said:
how bout regenerate da sector bit by bit again, seems like some sector damaged leaving da sd a 'scar' to rewrite data,try using regenerate software such as hdd regenerator or others. but... it ll take some....not some, but much of ur time to wait, but maybe it worth it
Click to expand...
Click to collapse
Erm, it's flash memory, there can be no 'scars', at least not ones made with software. HDD regenerator is useful for physically damaged hard drives, not flash memory.
In the mean time I used linux fdisk to start from scratch, deleted all partitions, made new ones, used mkfs, etc. Similar results.
I'm trying the official SDCard.org application, it seems like it hanged but it's now reporting 7% done. Will leave it overnight.
Diskpart
kosmarnik said:
Erm, it's flash memory, there can be no 'scars', at least not ones made with software. HDD regenerator is useful for physically damaged hard drives, not flash memory.
In the mean time I used linux fdisk to start from scratch, deleted all partitions, made new ones, used mkfs, etc. Similar results.
I'm trying the official SDCard.org application, it seems like it hanged but it's now reporting 7% done. Will leave it overnight.
Click to expand...
Click to collapse
Have you tried diskpart, it worked for me recovered a bad card.Run these commands from a command prompt one at a time.
diskpart
list disk
select disk #
clean
create partition primary
select partition 1
active
format quick fs=fat32
assign
exit
wxji said:
Have you tried diskpart, it worked for me recovered a bad card.Run these commands from a command prompt one at a time.
diskpart
list disk
select disk #
clean
create partition primary
select partition 1
active
format quick fs=fat32
assign
exit
Click to expand...
Click to collapse
Tried it just now and it hanged on formatting, stuck at 0%. Damn.
The official SDCard.org application did finish eventually, and it seemed all was well. I could even copy and read small files, but hanged on bigger (>1mb) ones.
I'm on the verge of giving up and returning the card, which is a hassle as I bought it from the UK.
Have I really damaged the card with partitioning?
This is the fdisk info on the card:
Code:
Disk /dev/sdb: 31.9 GB, 31914983424 bytes
255 heads, 63 sectors/track, 3880 cylinders, total 62333952 sectors
Units = sectors of 1 * 512 = 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk identifier: 0x00000000
Device Boot Start End Blocks Id System
/dev/sdb1 * 2048 62332927 31165440 6 FAT16
I beg experienced devs to give me some clues.
Is the starting sector ok?
Personally, I'm convinced your card was defective when you bought it.
-- Sent from my TouchPad using Communities
post-mortem said:
Personally, I'm convinced your card was defective when you bought it.
Click to expand...
Click to collapse
Well that's the only sensible explanation, but I did use the card for some time in my DSLR. I put at least a few GB on it successfully.
Also it's my second UHS1 card, the first one turned to be defective from the start with the same symptoms
Weird.
Could be a bad batch of chips, or they might be knock-offs.
Or, you're just unlucky
-- Sent from my TouchPad using Communities
post-mortem said:
Could be a bad batch of chips, or they might be knock-offs.
Or, you're just unlucky
-- Sent from my TouchPad using Communities
Click to expand...
Click to collapse
seems so.
I had 16+ microsd cards with no faults whatsoever. Until I wanted a class 10 card.
After this I'm afraid to partition the other cards :crying:
If it was a SanDisk class 10 card, and you bought it off the internet, then it's almost definitely a fake.
Don't be scared to make partitions. Just be aware that most partitioning software will not preserve any data, and that that writing any data to the card shortens it's lifespan. If you trust it more, you can partition your card from within the Advanced menu of your recovery (e.g., CWM).
-- Sent from my TouchPad using Communities
post-mortem said:
If it was a SanDisk class 10 card, and you bought it off the internet, then it's almost definitely a fake.
Click to expand...
Click to collapse
Well I got it from Amazon UK. It was sold and shipped directly from Amazon, not the Amazon marketplace. Benchmarks were the same as a genuine card (attached). Seemed genuine enough.
Don't be scared to make partitions. Just be aware that most partitioning software will not preserve any data, and that that writing any data to the card shortens it's lifespan. If you trust it more, you can partition your card from within the Advanced menu of your recovery (e.g., CWM).
Click to expand...
Click to collapse
I know, it makes no sense. I was thinking that maybe there was some weird block alignment issue or something.
kosmarnik said:
Well I got it from Amazon UK. It was sold and shipped directly from Amazon, not the Amazon marketplace. Benchmarks were the same as a genuine card (attached). Seemed genuine enough.
I know, it makes no sense. I was thinking that maybe there was some weird block alignment issue or something.
Click to expand...
Click to collapse
Out of curiosity have you tried to return to amazon? They are very good about it in US, so you usually won't be charged for return shipping.
Beefcake_ said:
Out of curiosity have you tried to return to amazon? They are very good about it in US, so you usually won't be charged for return shipping.
Click to expand...
Click to collapse
The first UHS-1 card, yes, very easy to do. This second one, which I have for more than 30 days, not so much. Can't find clear info on returns.
If there's anyone from UK reading this and has experience with Amazon returns, please chime in.
kosmarnik said:
The first UHS-1 card, yes, very easy to do. This second one, which I have for more than 30 days, not so much. Can't find clear info on returns.
If there's anyone from UK reading this and has experience with Amazon returns, please chime in.
Click to expand...
Click to collapse
I advise that you go here : http://www.sandisk.com/about-sandisk/contact-us/
(sandisk contact us part of the website)
And contact technical support. tell them you cannot format the card and tested in several devices.
They will send you a semi-automated response, with a link to a form where you need to register the product and you can use their warranty.
There is a product code / serial field. Don't know if it's required for an sdcard.
You should be able to return the product to them, and they'll replace the card,
I have a defective card too, coming from amazon as well.
I think amazon removes the possibility to return a product after a few weeks.
I've been able to return mine to amazon.
aureusz said:
I advise that you go here : http://www.sandisk.com/about-sandisk/contact-us/
(sandisk contact us part of the website)
And contact technical support. tell them you cannot format the card and tested in several devices.
They will send you a semi-automated response, with a link to a form where you need to register the product and you can use their warranty.
There is a product code / serial field. Don't know if it's required for an sdcard.
You should be able to return the product to them, and they'll replace the card,
I have a defective card too, coming from amazon as well.
I think amazon removes the possibility to return a product after a few weeks.
I've been able to return mine to amazon.
Click to expand...
Click to collapse
Ha, got my RMA authorization from Sanisk, will be sending it on Monday.
Partitioned two other class 4 cards. working fine, my HD2 is finally running smooth.
Hopefully the replacement card will work.
Related
Hello, recently my micro sd 16gb sandisk memory card got corrupted. i rescued some files, but i can't format it. it says windows was unable to format. my phone don't even recognizes the card and it can't format it. i tried some other software, but no success. maybe it has bad sectors or something. i don't know.
Please help me!
Thank You!
terzer said:
Hello, recently my micro sd 16gb sandisk memory card got corrupted. i rescued some files, but i can't format it. it says windows was unable to format. my phone don't even recognizes the card and it can't format it. i tried some other software, but no success. maybe it has bad sectors or something. i don't know.
Please help me!
Thank You!
Click to expand...
Click to collapse
Terzer,
Sadly, you'll probably have to get a new one. If you try to get it to work, you'll most likely lose even more data! The same thing happened to me only three weeks ago. My card was at most six months old.
Basically, microSD cards are very delicate. As if by fate, I had just read an article about that right before my card went belly up! My new card even has a notice recommending that the card be inserted and removed as few times as possible, for this very reason.
Given this, and given that, for the most part, when they're in good condition they're very reliable, when you start having problems with a card like this, it's FAR more likely that the card has gone bad in some way.
When mine went bad I tried everything I could think of to get it working again. And I succeeded! Trying all different block sizes, I got it to format in the flash drive on my desktop system.
It died again within 48 hours!
I know these things are expensive. Unfortunately, this one is probably a loss. Sorry!
-geo
so the damage is physical?
Thank You!
terzer said:
so the damage is physical?
Thank You!
Click to expand...
Click to collapse
There's no way to tell what the problem is. Basically, though, all problems with flash cards are physical in one sense or another. It's extremely unlikely that it's a driver or card reader error if it was working before. It could be a filesystem error, but if you've already tried to re-format it and failed, well, that doesn't really leave much else.
I don't have your original post in front of me. Did you try formatting it in a computer? If not, then you should definitely try that. (You'll need a microSD to full SD adapter or a microSD to USB.) Also, try doing a full format. (In Windows that means not doing a Quick Format.) A Quick Format just tries to create a new File Table. A full format will try to make a new filesystem. I don't know if there's a way to do an actual hardware format. (Actually, I don't believe that has any meaning on a solid state device.)
Anyway, even if you do get it to format successfully, be very careful what you put on it. That's exactly what happened to me. As I said, after finally getting it to format, it died again in less than two days.
This is about all I can tell you to try. (BTW, I'm a system administrator. ) Basically, and I am really sorry, it's probably dead. I'm guessing they're pretty [email protected]!n expensive in Bulgaria? I know they are here. I almost cried when my first one died!
Although, looking at it in a positive light , when I got my first one they only had Class 2 devices. My new Adata card is Class 6. The difference is amazing. Whatever you wind up doing, my suggestion would be to limit how many times you take it in and out of your phone.
Hi!
A few days ago I bought a Takems 16gb class 6 microsdhc and it worked, but today i put the card in a galaxy s...when a put back in my desire the card was working but the phone can1t write... i tried to format but i can't it, because the card is write-protected...sd adapter has a lock/unlock switch but it can't help...
how can i remove the write protection?
there may be a password on the card
or encryption
hmm...i tried it in my friend's galaxy s, but didn't work...
i can't foramat the card...low level format didn't work....
i don't have any idea..
I have the same problem...
HELP please!!!
but mine is Sandisk 16GB class2, used for about 1 year without problem.....but now......cant write, cant delete, cant format (even low level)
asuradahk said:
I have the same problem...
HELP please!!!
but mine is Sandisk 16GB class2, used for about 1 year without problem.....but now......cant write, cant delete, cant format (even low level)
Click to expand...
Click to collapse
:S
There is only one solution... destroy it with a hammer
you can buy a new card or give it back and request a new if it has guarantee
return to seller or use linux and gparted or sdformatter from http://www.sdcard.org/consumers/formatter_3/SDFormatterv3.0.zip
to format the card and try to bring it back to life
I'm not sure why in this situation people insist in saying "format the card" with one piece of software or another as this simply will not work.
I have an 8gb USB stick that has done the exact same thing and no software you try and use will format it as they all report it as write protected.
Gparted, hp utility, sd format, a long list of other usb formatting tools, partition magic the list goes on none of them work.
Even a low level format at linux command prompt will not work as it gets mounted read only so it just errors.
This is an error where the hardware is mistakenly interpreted as write protected, very often caused by a write interrupt leaving corrupted data behind.
After about 2 weeks of trying every solution on google I have come to the conclusion that the stick is no good you can read what is on it already but that's it.
So my advice is stop banging your head against the wall and just get a new stick, format it and copy over what is on the old one
Kodam said:
Hi!
A few days ago I bought a Takems 16gb class 6 microsdhc and it worked, but today i put the card in a galaxy s...when a put back in my desire the card was working but the phone can1t write... i tried to format but i can't it, because the card is write-protected...sd adapter has a lock/unlock switch but it can't help...
how can i remove the write protection?
Click to expand...
Click to collapse
nothing will work..trust me.. get a new one!
chague another SD
I was given one of these cards as a gift and the first one shipped failed to format but the replacement came in today and works great in my Galaxy Tab 7 Plus. Just thought someone may want to know. The formatted storage space is 59.4gb.
ZOMG. 64gb works with the GTab+? that's legit! how much did you pay for it?
diospada11 said:
ZOMG. 64gb works with the GTab+? that's legit! how much did you pay for it?
Click to expand...
Click to collapse
It was a gift but Amazon had it for $149.00 at the time.
You are so lucky! If it were about 75 bucks I would actually consider getting of of these...
I'm planning to buy this card,so i want to know its actually transfer speed. Can you test it on PC using the software Atto Disk Benchmark ?
Since they started doing this "internal" and "external" memory card with our devices, I'm not too worried about swapping the sd card in and out anymore as it doesn't affect the way the device works as much as it used to.
I have a 32GB card each for my tablet and phone that pretty much stay there all the time. What i did instead for extra capacity was collect all the old 16GB cards and store them in this sd-card holder that fits perfectly in this black aluminum business card holder. I bought the sd-card organizer and business card holder from ebay.
That's 11 (one in the microSD to SD adapter) 16GB cards for 176GB total. I mainly use this system to backup and transfer pictures from my bigger SD cards when I'm out shooting photos (using the 30-Pin to SD adapter).
http://www.amazon.co.uk/gp/offer-li...l?ie=UTF8&coliid=&me=&qid=&sr=&seller=&colid=
was £95 last week.
down to £77
nrage23 said:
I was given one of these cards as a gift and the first one shipped failed to format but the replacement came in today and works great in my Galaxy Tab 7 Plus. Just thought someone may want to know. The formatted storage space is 59.4gb.
Click to expand...
Click to collapse
What did you use to format the card? i put this in my G Tab+ and when i click mount sd, it gives me an error icon in the notification area. when i tap that and click format, it says it is blank or has an unsupported file system. Any help would be appreciated
*Edit* - I've been having trouble finding a utility I trust to format the card as FAT32. On my windows 7 64 bit machine, the native right click format menu doesnt even give me the option of doing FAT32, just exFAT or NTFS (both useless for the application I need). Even the official SD Formatter tool didnt give any choice in the filesystem to format to.
After seeing this article, I decided as a last ditch effort to use my Vibrant to see if i could get it to format as FAT32 since the article mentioned it working in the Galaxy S. This worked and i now have 59.4GB free to exploit on my G Tab+ (However, I did have to use the file write permissions fix to get things to copy between internal and external memory within Astro). Just wanted to post for others that were having trouble finding a way to format this card as FAT32. My assumption is any of those confirmed devices will format it.
Just curious, as I am about to be on my 3rd card. First two cards, transfered for a short period of time, then froze, then reformatted, same thing. Next time reformatting froze, and both cards showed unsupported file structure.
Used:
Dban
sdformatter
diskpart
gparted
linux fedora built in formatter
os x disk utility
fdisk
and everytime the card fails to format. I did call sandisk who told me their class 10 64gb microsd cards have had a really high fail rate...
I was on the phone with them asking why I should keep the card...lol
i am not angry, just really curious if I am the only one. Would be my Irish luck!
Have you tried this
https://www.dropbox.com/s/660o0s5rf68az3q/guiformat.exe
droidstyle said:
Have you tried this
https://www.dropbox.com/s/660o0s5rf68az3q/guiformat.exe
Click to expand...
Click to collapse
failed aswell on both cards :/
nosympathy said:
Just curious, as I am about to be on my 3rd card. First two cards, transfered for a short period of time, then froze, then reformatted, same thing. Next time reformatting froze, and both cards showed unsupported file structure.
Used:
Dban
sdformatter
diskpart
gparted
linux fedora built in formatter
os x disk utility
fdisk
and everytime the card fails to format. I did call sandisk who told me their class 10 64gb microsd cards have had a really high fail rate...
I was on the phone with them asking why I should keep the card...lol
i am not angry, just really curious if I am the only one. Would be my Irish luck!
Click to expand...
Click to collapse
I've had my SanDisk 64 Gb card and GSIII for a whopping 8 days.
No problems yet, I filled up 50 gigs on the card and no errors of freeze ups (I haven't transferred anything into the card since the day I got it)
I'll let you know if it kicks out on me.
SeattleParis said:
I've had my SanDisk 64 Gb card and GSIII for a whopping 8 days.
No problems yet, I filled up 50 gigs on the card and no errors of freeze ups (I haven't transferred anything into the card since the day I got it)
I'll let you know if it kicks out on me.
Click to expand...
Click to collapse
mine was immediate. First card I got 12 of 24gb transfered crashed, second card was 6gb of 24 before it crashed.
they are overnighting me a 3rd card, so i prolly will get it thursday, and will try again...
I purchased the 64Gb Class 6 over a month ago and have had no problems. I was bummed I did not go with the class 10, now hearing the high failure rate on the class 10 makes me glad I got the class 6.
Thats wierd, mine has worked flawless so far. Keeping my fingers crossed lol.
Is this the microSDHC or microSDXC? I'm about to pull the trigger on this one and if it's the same model, I'll wait.
Aquila76 said:
Is this the microSDHC or microSDXC? I'm about to pull the trigger on this one and if it's the same model, I'll wait.
Click to expand...
Click to collapse
Mine is the sdxc-1
Aquila76 said:
Is this the microSDHC or microSDXC? I'm about to pull the trigger on this one and if it's the same model, I'll wait.
Click to expand...
Click to collapse
SDXC
droidstyle said:
Mine is the sdxc-1
Click to expand...
Click to collapse
yes this one.
Sorry to hear about your issue. I guess I'm glad that I cheaped out and went with the Class 6 before they started giving the good deals on the Class 10 ones.
open1your1eyes0 said:
Sorry to hear about your issue. I guess I'm glad that I cheaped out and went with the Class 6 before they started giving the good deals on the Class 10 ones.
Click to expand...
Click to collapse
I didn't think there was even a class 6 for sandisk's 64gb SDXC? One doesn't exist on their website anyways. I had even bought one off bestbuy advertised as the class 6 version, but when it showed up it was the class 10(possibly UHC too, threw the package out so I'm not 100% sure on that part)
Brian Gove said:
I didn't think there was even a class 6 for sandisk's 64gb SDXC? One doesn't exist on their website anyways. I had even bought one off bestbuy advertised as the class 6 version, but when it showed up it was the class 10(possibly UHC too, threw the package out so I'm not 100% sure on that part)
Click to expand...
Click to collapse
My mistake, you are right. I actually meant between the two versions of the 64GB, the cheaper (non-UHS?) one.
I had a Class 10 64GB Sandisk card fail on me but it was plugged in to the computer via USB at the time so I don't blame it on the Galaxy S3. They sent me a Class 6 card in return. When pressed on it they said they have been having problems with the Class 10 cards and their technicians are looking in to it. After dealing with Sandisk customer service for a week, they finally agreed to send me a Class 10 card after I send back the Class 6 one.
So that means I'll be without an external sdcard for another 3 weeks! Total time I have been dealing with this issue is 4 weeks so far.
The Galaxy S III format function will only format for extfat32 which is Microsoft proprietary and not fully understood by Samsung or others. Its a known issue now that it causes corruption and missing files on the Galaxy S III. ROMs will also not support the formatting, you need to format Fat32 using a tool. I'm not sure if it could lead to permanent damage though as described in OP.
http://forum.xda-developers.com/showthread.php?t=1803814
Been running Class 10 a couple months. No problems so far. Formatted fat32.
manaox2 said:
The Galaxy S III format function will only format for extfat32 which is Microsoft proprietary and not fully understood by Samsung or others. Its a known issue now that it causes corruption and missing files on the Galaxy S III. ROMs will also not support the formatting, you need to format Fat32 using a tool. I'm not sure if it could lead to permanent damage though as described in OP.
http://forum.xda-developers.com/showthread.php?t=1803814
Click to expand...
Click to collapse
there are plenty of people using the card in exfat, as many have stated they stuck the card right in the SIII and off they went.
also, plugging the card right into my computer, and never into my phone, led to the same issue.
also mentioned, calling sandisk, they said their is a high failure rate on the class 10 cards. Those of you with cards still working, I hope my new card coming in tomorrow, works the same way.
nosympathy said:
there are plenty of people using the card in exfat, as many have stated they stuck the card right in the SIII and off they went.
also, plugging the card right into my computer, and never into my phone, led to the same issue.
also mentioned, calling sandisk, they said their is a high failure rate on the class 10 cards. Those of you with cards still working, I hope my new card coming in tomorrow, works the same way.
Click to expand...
Click to collapse
If you do still want to get your old one working (if you still have it), I guess you can try this utility. It worked for me when I messed up some of my old cards pretty badly. Perhaps it is worth a shot?
yosterwp said:
If you do still want to get your old one working (if you still have it), I guess you can try this utility. It worked for me when I messed up some of my old cards pretty badly. Perhaps it is worth a shot?
Click to expand...
Click to collapse
have that listed in my OP, didn't work on either card. If I ran it on the card normally, would tell me the card was write protected. If I ran it on the card after using gparted to delete the main partition it would get about 40% through formatting and then fail saying the card stopped reading.
Sandisk cards really are junk & it's not just the 64 gig class 10.
I have used their cards for years as there is not a lot of other options at times, but I had three of their 32 gig cards go bad on me.
I now have three 64 gig class 10's but I back them up religiously to my PC. I don't use FAT32 as I store blue-ray rips to my card that are over 4 gigs & FAT32 won't allow that.
Moving the intent of a few posts on LineageOS thread to here.
rb1979 said:
Hi everyone,
Some of you reported that SD Card stopped working. This happened to me too today after about 20 hours after the latest update. The case with me is it doesn't fix itself even after a restart. I'm kind of stuck, whatever I want to do with the SD Card it wants me format it. I always had it as internal storage with apps and other things there. I have the the backup from the before the update. Will that fix if I restore it? Just want to mention that I update every week and never missed one. I had very minor issues up until now. Week in and week out everything has been fine and I started using the rom with the first release, all clean, full format and then weekly over the air updates every single week.
If anybody know any solution please let me know, if nothing works or I don't hear anything I'll probably try the backup restoration. BTW, to be specific about SD card no working I always get two notifications, one is "Unsupported SanDisk SD card" and the other is "SanDisk SD card missing"
Thank you
Click to expand...
Click to collapse
KrisM22 said:
Use a card brand other than sandisk and size 32GB or less.
Click to expand...
Click to collapse
rb1979 said:
Thank you for you help, I really appreciate it. The problem I see, right or wrong, is that I had this card for a year with no issues, first under stock rom, then under CM, and now under LineageOS up until the latest update with no issues at all. So it's just hard for me to take the card as the problem. Especially after seeing other people reporting it too lately. Do you have more information than just that? Meaning LineageOS and won't ever get along with sandisk or size larger than 32GB because of some external hardware limitation or something like that. Or this is just general knowledge what works best with LineageOS? In the first case I can think about case I can go and invest into a new card but in the second case I can just wait it out until codebase improves. It would good to know more so I can make better decisions.
Thanks for your help again.
Click to expand...
Click to collapse
KrisM22 said:
In my experience, most folks presenting SDcard problems have sandisk. I personally have had problems with sandisk that has led me to avoid them. I prefer samsung. There are many others. edit currently using a pny U3 32GB, but it's an old one and only does 56/29MBs R/W.
Click to expand...
Click to collapse
adityak1303 said:
+1 @KrisM22. I agree that almost all the users that state that there's a problem with their SD card were using a SanDisk SD card including myself. @rb1979, if you really think that your card isn't faulty, then try using it in some other phone. If you face the same errors then your card is faulty. If it works fine on the other phone, only then can it be considered as a problem with the ROM.
Click to expand...
Click to collapse
rb1979 said:
Thanks both of you, I'll do some testing around and get back to you with my findings.
Click to expand...
Click to collapse
KrisM22 said:
I just ordered one of these because I want to test the 64GB thing as it keeps coming up.
Samsung 64GB 100MB/s (U3) MicroSDXC EVO Select Memory Card with Adapter (MB-ME64GA/AM) - $23 + some silly $3 thing to get free shipping over $25. There are faster ones out there but I'm a cheapskate and don't use it enough to justify it.
Click to expand...
Click to collapse
That's most of it - then it goes verbose and wobbly.
I welcome any and all comments about SDcards!
There is no OT here but remember the XDA rules and try to be nice to folks. You can learn without trying to control others' behaviour.
No need to pretend you are TD. (allusion to Alice in Wonderland - Top Doormouse)
Thanks for creating this thread. There are surprisingly few other recent threads that discuss this topic on XDA apart from the one I've previously linked to (https://forum.xda-developers.com/android/help/micro-sd-write-access-format-exfat-t3358275). Also, I'm bringing over the well informed SD related comments that you left behind.
---------------------------
I've got to push back on the apriori assumption that these are specifically Sandisk brand card issues without knowing the specific details of the issues and seeing actual logs, and also without knowing the history of the individual cards in question (details of every device it was connected to and how it was connected, what OS and what file management methods were used, and how full the card typically is, and how frequently it might be disconnected in the middle of a file operations, among other things).
We must be mindful of the fact that the majority of SD cards in circulation are Sandisk cards which means that the majority of reported problems will be on Sandisk cards but this does not mean that the Sandisk cards are experiencing proportionately more issues than other brands. I don't doubt individual experiences, but it they may not speak to a larger picture. For example: Having supported large systems (>300 devices) running Linux directly from SD cards I did not see more problems with Sandisk cards than others. We've not seen enough evidence here to declare that this this is a Sandisk problem.
rb1979 said:
...I had this card for a year with no issues, first under stock rom, then under CM, and now under LineageOS up until the latest update with no issues at all.So it's just hard for me to take the card as the problem
Click to expand...
Click to collapse
The fact that a card has been used for a long time under different circumstances does not support a logical argument that the problem is in the ROM, in fact that supports the logical argument that the problem is with the card.
adityak1303 said:
....if you really think that your card isn't faulty, then try using it in some other phone. If you face the same errors then your card is faulty. If it works fine on the other phone, only then can it be considered as a problem with the ROM.
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Click to collapse
Good advise since, if the cards is having problems it should bring the problems to the other devices. Testing a different card in the first device on which the problem was noticed is also a good test.
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Here is some supplemental information specific to Sandisk SD cards' built in data protection on cards experiencing failure. https://forum.xda-developers.com/android/help/micro-sd-write-access-format-exfat-t3358275. To summarize what is there: An SD card may begin to fail unknown to us, and then when the built in data protection is invoked it "breaks" the card with a dirty bit at beginning of drive so it cannot be written to or formatted but still allows us to copy data. The symoptoms when that data protection is invoked are similar to those bing reported by people who can no longer mount the card in Android devices (Android devices require read and write access to mount the card, unlike when the card is access via card reader on computer).
Just an update. I tried to format the card as portable storage (after this failure as internal and being burned I have hard time trusting it now) but it fails. I didn't do any testing with other phones just went straight for format. I might just buy another card. I think the phone specs say it's 32 GB max, is it still the case with different OS or not (meaning it was due to software not hardware) if I could get something higher than 32 (the current broken one is 32) I would go for it.
Thanks
rb1979 said:
Just an update. I tried to format the card as portable storage (after this failure as internal and being burned I have hard time trusting it now) but it fails. I didn't do any testing with other phones just went straight for format. I might just buy another card. I think the phone specs say it's 32 GB max, is it still the case with different OS or not (meaning it was due to software not hardware) if I could get something higher than 32 (the current broken one is 32) I would go for it.
Thanks
Click to expand...
Click to collapse
I believe after you use it as internal, and then try to use it as external, you first have to write an MBR on it and a partition formatted FAT32. i use a bootable stand-alone GPARTED to do that.
http://gparted.org/
Moto says it's limit is 32GB. Folks have, I believe, used much bigger cards on it. Don't know what is the limiting factor - be it software (ROM) , hardware, or licensing (exfat for Microsoft). I have ordered a 64GB Sammy which I should get in 1/2 week so I can test. Course I wouldn't be doing exactly what you would be doing so the test would only show that the G3 could read/write to it. I will only use it as external storage. I don't really "need" 64GB but it will allow me to be a bit more sloppy vis a vis nandroid backups.
It could be that after you format yours, that it will suddenly work just fine. Then again I just had a thumb drive go belly-up from I/O errors - once in a great while, it happens.
KrisM22 said:
... Moto says it's limit is 32GB. Folks have, I believe, used much bigger cards on it. Don't know what is the limiting factor .
Click to expand...
Click to collapse
I've got a 128gb in my Moto G (3rd - XT1540 2GB), and I have used the card for a long time. It works just fine for me, and the space is obviously fantastic to have. Every now and then (every few months or so, I'd say - maybe 3 times in the 18 months I've had it), it does become corrupted, though, and I get those same error messages. A backup, wipe/re-format, and restore, and I put it right back in my phone and it works just fine again. Seems like that's happened in other devices, though, too.
The card is a SanDisk Ultra SL128 (Class 10/UHS-1, man'd Jan 2016). I've only ever used it for external storage, never adopted, and I've only ever formatted the card as FAT32, using my PC. I'm running stock Android 6.0 24.24.1 at the moment, with TWRP.
beachfl said:
I've got a 128gb in my Moto G (3rd - XT1540 2GB), and I have used the card for a long time. It works just fine for me, and the space is obviously fantastic to have. Every now and then (every few months or so, I'd say - maybe 3 times in the 18 months I've had it), it does become corrupted, though, and I get those same error messages. A backup, wipe/re-format, and restore, and I put it right back in my phone and it works just fine again. Seems like that's happened in other devices, though, too.
The card is a SanDisk Ultra SL128 (Class 10/UHS-1, man'd Jan 2016). I've only ever used it for external storage, never adopted, and I've only ever formatted the card as FAT32, using my PC. I'm running stock Android 6.0 24.24.1 at the moment, with TWRP.
Click to expand...
Click to collapse
Thanks - Becoming corrupted every 6 months seems excessive, but with heavy use...? So what do you use it for? Also it sounds like you are using something other than the phone to format it...?
At least you are ready for it and just re-format it!
beachfl said:
I've got a 128gb in my Moto G (3rd - XT1540 2GB), and I have used the card for a long time. It works just fine for me, and the space is obviously fantastic to have. Every now and then (every few months or so, I'd say - maybe 3 times in the 18 months I've had it), it does become corrupted, though, and I get those same error messages. A backup, wipe/re-format, and restore, and I put it right back in my phone and it works just fine again. Seems like that's happened in other devices, though, too.
The card is a SanDisk Ultra SL128 (Class 10/UHS-1, man'd Jan 2016). I've only ever used it for external storage, never adopted, and I've only ever formatted the card as FAT32, using my PC. I'm running stock Android 6.0 24.24.1 at the moment, with TWRP.
Click to expand...
Click to collapse
That may not be drive corruption but rather a corrupted file or files. If it is localize drive corruption it may still be there without having any impact until some data is written to that part of the drive. Unlike platter based hard drives, when these drives actually start to fail they may invoke a built in data protection (dirty bit) which resembles being locked in read only mode preventing the drive from being formatted which is obviously not your case. Have you ever done a sector scan of the drive, eg chkdsk <driveletter> /f /r or done a full format (as opposed to quick format)? Either of those things may flush out localized damage and the scan might fix it but they would take a long time.
KrisM22 said:
Thanks - Becoming corrupted every 6 months seems excessive, but with heavy use...? So what do you use it for? Also it sounds like you are using something other than the phone to format it...?
At least you are ready for it and just re-format it!
Click to expand...
Click to collapse
Yeah I guess it is kinda a small PITA lol. Could just be from me starting and cancelling or moving too many things at once, I don't know.
I've never actually come close to needing all that space to TBH. I could probably do just fine with a 64, but it's nice to know I could record or store hours of HD video, for example, if I need it. I got nearly 30 gigs of music on it. I keep tv and movies on there, too, in case I get caught bored somewhere. Full Nandroid and Titanium backups are on there, as well.
I use a microSD adapter and a small (76 kb) utility for Windows called FAT32Format (Ridgecorp).
---------- Post added at 22:00 ---------- Previous post was at 21:45 ----------
IronTechmonkey said:
That may not be drive corruption but rather a corrupted file or files. If it is localize drive corruption it may still be there without having any impact until some data is written to that part of the drive. Unlike platter based hard drives, when these drives actually start to fail they may invoke a built in data protection (dirty bit) which resembles being locked in read only mode preventing the drive from being formatted which is obviously not your case. Have you ever done a sector scan of the drive, eg chkdsk <driveletter> /f /r or done a full format (as opposed to quick format)? Either of those things may flush out localized damage and the scan might fix it but they would take a long time.
Click to expand...
Click to collapse
I've had that problem before, too, but not on the 128 I have in my phone now. That is very frustrating. One of my 32 gb cards suddenly went into "read-only" mode as you describe, and nothing I can do will get it useable again. All the files are still readable from it (except the part of one huge video file that is on the bad sector that seems to have caused the problem).
So right, my 128 card doesn't have that problem, and seems to be corrupted files, as you say, not the drive itself. I do actually do what you talk about - when I do find I have to re-do the 128 sd card in my phone, I run a Windows chkdsk /r before I re-format it, and a chkdsk /f afterward, as a check. The chkdsk /r does take quite a while, yeah .. a few hours.
Cheers
beachfl said:
Yeah I guess it is kinda a small PITA lol. Could just be from me starting and cancelling or moving too many things at once, I don't know.
I've never actually come close to needing all that space to TBH. I could probably do just fine with a 64, but it's nice to know I could record or store hours of HD video, for example, if I need it. I got nearly 30 gigs of music on it. I keep tv and movies on there, too, in case I get caught bored somewhere. Full Nandroid and Titanium backups are on there, as well.
I use a microSD adapter and a small (76 kb) utility for Windows called FAT32Format (Ridgecorp).
---------- Post added at 22:00 ---------- Previous post was at 21:45 ----------
I've had that problem before, too, but not on the 128 I have in my phone now. That is very frustrating. One of my 32 gb cards suddenly went into "read-only" mode as you describe, and nothing I can do will get it useable again. All the files are still readable from it (except the part of one huge video file that is on the bad sector that seems to have caused the problem).
So right, my 128 card doesn't have that problem, and seems to be corrupted files, as you say, not the drive itself. I do actually do what you talk about - when I do find I have to re-do the 128 sd card in my phone, I run a Windows chkdsk /r before I re-format it, and a chkdsk /f afterward, as a check. The chkdsk /r does take quite a while, yeah .. a few hours.
Cheers
Click to expand...
Click to collapse
Great that you're running chkdsk on it. May be caused if you cancel or something happens in the middle of a move. Only other thing I could suggest is to do your format on the phone itself, after you've done everything else on the PC. Don't know if that would make a difference. Shouldn't but I've run across vy experienced folks saying to do that. But... Yeah you've got me hankering to put a 128GB on it...
edit: for read only cards before you trash them I would run them by gparted just to see if re-creating the MBR and partition would change its mind. I have successfully done that with thumb drives but not with cards/adapter/reader.
KrisM22 said:
Great that you're running chkdsk on it..
edit: for read only cards before you trash them I would run them by gparted just to see if re-creating the MBR and partition would change its mind. I have successfully done that with thumb drives but not with cards/adapter/reader.
Click to expand...
Click to collapse
Yeah, thanks for reminding me about fixing the errors, IronTechmonkey. It's kinda an important step I forgot to mention.
I not sure I have the bad card still. I didn't think about GParted, should have. I tried Paragon, among other things, but to no avail.
What speeds are folks getting from a U3 SDE card? I bought what I thought was a 100/60MB/s card and it does about what my old PNY card did - R=40-50, W=34-40MB/s. Is the phone the limiting factor or did I get a bum card?
KrisM22 said:
What speeds are folks getting from a U3 SDE card? I bought what I thought was a 100/60MB/s card and it does about what my old PNY card did - R=40-50, W=34-40MB/s. Is the phone the limiting factor or did I get a bum card?
Click to expand...
Click to collapse
AFAIK the the phone hardware/OS is unlikely to meet the advertised speeds of the cards. Likewise and perhaps more so for USB 2.0 ports and anything using MTP.
I dont know how this compares but for what it is worth: With a Sandisk Utra SDHC (Class 10 - Video, Ultra High Speed Class 1 - whatever that jargon means) touting 80 MB/s read speeds and 40 MB/s* write speeds; the read speeds did consistently approach the rating (getting hot enough to scorch the logo) and the wite speed occasional did. Another factor is the size of files being copied, larger quantities of smaller files taking more time per MB, unless using some dedicated test utility I've never actually done a test of SD r/w speeds on the device. What are you using to measure those?
* In re write speed ratings: Digging into the small print of the specifications may reveal that the manufacturer uses different size cards each for the reed and write speed ratings, effectively padding the write speeds by citing test results from smaller capacity cards.
IronTechmonkey said:
AFAIK the the phone hardware/OS is unlikely to meet the advertised speeds of the cards. Likewise and perhaps more so for USB 2.0 ports and anything using MTP.
I dont know how this compares but for what it is worth: With a Sandisk Utra SDHC (Class 10 - Video, Ultra High Speed Class 1 - whatever that jargon means) touting 80 MB/s read speeds and 40 MB/s* write speeds; the read speeds did consistently approach the rating (getting hot enough to scorch the logo) and the wite speed occasional did. Another factor is the size of files being copied, larger quantities of smaller files taking more time per MB, unless using some dedicated test utility I've never actually done a test of SD r/w speeds on the device. What are you using to measure those?
* In re write speed ratings: Digging into the small print of the specifications may reveal that the manufacture uses different size cards each for the reed and write speed ratings, effectively padding the write speeds by citing test results from smaller capacity cards.
Click to expand...
Click to collapse
Thanks.
Interesting - so you were testing it on windows (?) I did test them on linux and got W=74 on the PNY and 77MBs on the Samsung. That's through a USB3 cardreader.
On the phone I used A1 SD Bench, SD card test, and disk speed test.
Off to try windows...
I was just going to boot up a WinPE and test it there. What prog did you use to test it?
Yes, both of these cards test at about R=81 , W=66.
KrisM22 said:
Thanks.
Interesting - so you were testing it on windows (?) I did test them on linux and got W=74 on the PNY and 77MBs on the Samsung. That's through a USB3 cardreader.
On the phone I used A1 SD Bench, SD card test, and disk speed test.
Off to try windows...
I was just going to boot up a WinPE and test it there. What prog did you use to test it?
Click to expand...
Click to collapse
Yes, Windows 7, which reports file data transfer speeds in the copy process window so I did not use a utility. I've done this enough times in geneal, and a few times specifically with large files and a stopwatch, so I know the speed in the file copy window is relatively accurate (for single large files). The speeds you get on linux seem reasonable. I'll test A1 SD Bench on Osprey when I have a chance. Thanks.
---------- Post added at 11:09 PM ---------- Previous post was at 11:08 PM ----------
KrisM22 said:
Yes, both of these cards test at about R=81 , W=66.
Click to expand...
Click to collapse
Also seemingly reasonable.
My card seem to be working just fine on my Lineage OS. I rebooted by device and now it says it's corrupted. Is there any way out? Will I be able to get my data back?
jay.bhadra1995 said:
My card seem to be working just fine on my Lineage OS. I rebooted by device and now it says it's corrupted. Is there any way out? Will I be able to get my data back?
Click to expand...
Click to collapse
My suggestion would be to copy whatever you can off it and re-format it asap. If you can't read it via phone, try PC.
EDIT: I am assuming you are using it as external. If you are using it as internal, I believe you have lost everything. I know of nothing that can read it. GPARTED can only re-add an MBR and a partition and make it usable again, but all data is lost.
KrisM22 said:
My suggestion would be to copy whatever you can off it and re-format it asap. If you can't read it via phone, try PC.
EDIT: I am assuming you are using it as external. If you are using it as internal, I believe you have lost everything. I know of nothing that can read it. GPARTED can only re-add an MBR and a partition and make it usable again, but all data is lost.
Click to expand...
Click to collapse
Yeah. I copied everything and made a backup. Luckily I use it only as a storage device and not an internal drive for apps. But how do I re-format it? I tried using the format option that my phone gives me but to no avail.
jay.bhadra1995 said:
Yeah. I copied everything and made a backup. Luckily I use it only as a storage device and not an internal drive for apps. But how do I re-format it? I tried using the format option that my phone gives me but to no avail.
Click to expand...
Click to collapse
Do you have a little card reader so you can plug it into your PC?
KrisM22 said:
Do you have a little card reader so you can plug it into your PC?
Click to expand...
Click to collapse
No. Sadly I don't. Is there no other way round to format it?