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Broken SD Card?

For the last 5 hours I have had hell with my sd card I redid my phone with JF new build and wiped out my 8gb class 6 a-data sd card but all of a sudeen it been acting weird
one thing is in paragon it shows the partitions still there (ext2) which takes up the whole card and should not, while windows shows its fat32, and i can access it in windows but it wont show up in in partition program nor delete
while when i mount it into the g1 (where it ask to mount or dont mount when plug it into pc) it instantly unmounts and i click mount again but just makes a noise and unmounts also saying its blank
now my 2gb chip seems to work fine (sometimes well if i unstall the drivers and let them re install then it works for a great amount of time), but this 8 gb,...well
what do you guys think? is it fixable? I can record video of it all (errors and stuff included) if u want
idk if its my chip, my phone or my pc can anyone help?

i think this has something to do with the way windows handles sd cards with no partition table. i assume you formatted the whole card to fat32 using a third party utility? that will totally confuse the system, because it cached a version of the partition table and now there's nowhere to find the new one. a quick solution is to use the build-in format tool to format your sdcard (right click on sdcard's icon and select format...). this should force the system to recalculate the size of the partition. then you have to unplug the card reader and plug it back in. now paragon should work.

billc.cn said:
i think this has something to do with the way windows handles sd cards with no partition table. i assume you formatted the whole card to fat32 using a third party utility? that will totally confuse the system, because it cached a version of the partition table and now there's nowhere to find the new one. a quick solution is to use the build-in format tool to format your sdcard (right click on sdcard's icon and select format...). this should force the system to recalculate the size of the partition. then you have to unplug the card reader and plug it back in. now paragon should work.
Click to expand...
Click to collapse
after a long while, finally got windows to format the whole thing to fat32, but yet still acting weird

what kind of card reader are you using? certain card readers has their own controller and do not allow you to partition properly.
but i am sure mountd in android will allow you full access to the sdcard when it's mounted.
also how much total space do you have in that fat partition after format? a full 8gb sd should have approx. 7.45GB actually space. if your partition table is correct, windows should only format the fat partition and give you a size smaller than 7.45G.
I strongly suggest you try again under Linux using the phone as reader. any livecd with a partition manager will perform much better than windows.

Well i try it both on my phone and a mem card reader, but once I put it on my phone it does not detect a sd card (my 8gb im trying to fix) while detects my fat32 2 gb chip
on my laptop and pc cant format nor delete that ext2 8gb sd card
BUT that 8gb ext2 card im trying to fix loads perfeclty and can access it on ubuntu so im guessing its not physically broken

tanner2007 said:
but once I put it on my phone it does not detect a sd card
Click to expand...
Click to collapse
What do you mean by "it", the GUI. How about doing an ls on /dev/block from the terminal on the phone to see what linux sees?
tanner2007 said:
on my laptop and pc cant format nor delete that ext2 8gb sd card
Click to expand...
Click to collapse
Hmm, what do you mean by delete the card? You can delete a partition, but not a card: I'm not sure makes sense.
tanner2007 said:
BUT that 8gb ext2 card im trying to fix loads perfeclty and can access it on ubuntu so im guessing its not physically broken
Click to expand...
Click to collapse
You say ext2, but yet above you claim to have reformatted as FAT. What does your ubuntu machine think it is? One way to tell is to mount it and try to set permissions on a file, if you can, it is not FAT.
What is your objective, do you want a FAT partition, an EXT2 partition, both?

Well I got it working guys, I dont know what was happening as I said before different programs where detecting different file systems, but soon as I found out how to do it ubuntu I saw it was working and erased the whole card (all partitions and everything)
and now it works again thanks guys ur tips helped

Q) how to format FAT32 64gb card ? can't write/delete files.

Was wondering if anyone had any ideas on what I can possibly do??
The card came as EXFAT, but most roms only support FAT32.
I formatted the card to FAT32 which was fine .. but after copying a few files the card now refuses to write or delete files. I can still open and view media that's on it but that's about it. I can't even re-format it, it will say the disk can not be formated or write error. The card isn't corrupt though, I copied around 30gbs of video on it when it was in EXFAT partition before. J
I'm using an SD adaptor into my card reader, but yes I have ensured the lock switch is off.
edit - oh also, when you place the card into the phone it'll say that the card is damaged/blank.
Any help would be appreciated
Cheers,

thanhson87 said:
Was wondering if anyone had any ideas on what I can possibly do??
The card came as EXFAT, but most roms only support FAT32.
I formatted the card to FAT32 which was fine .. but after copying a few files the card now refuses to write or delete files. I can still open and view media that's on it but that's about it. I can't even re-format it, it will say the disk can not be formated or write error. The card isn't corrupt though, I copied around 30gbs of video on it when it was in EXFAT partition before. J
I'm using an SD adaptor into my card reader, but yes I have ensured the lock switch is off.
edit - oh also, when you place the card into the phone it'll say that the card is damaged/blank.
Any help would be appreciated
Cheers,
Click to expand...
Click to collapse
Make sure you format it in the phone

Every time I place the card in, it will say the card is damaged or blank
Then it tries to format it but then goes through the same loop of saying it's damaged/blank

thanhson87 said:
Every time I place the card in, it will say the card is damaged or blank
Then it tries to format it but then goes through the same loop of saying it's damaged/blank
Click to expand...
Click to collapse
unmount SD card before format SD card

ruscan.calin said:
unmount SD card before format SD card
Click to expand...
Click to collapse
alright i'll give it a go soon
cheers

i had experienced the same problem i tried my best using several fomat tools. think almost all the tools in the world....failed and bought a new one.....think its better go for new card

Did you try to format it on Linux? I've experienced some problems with SD cards formated on Windows (assuming that you run Windows )

vjz567 said:
i had experienced the same problem i tried my best using several fomat tools. think almost all the tools in the world....failed and bought a new one.....think its better go for new card
Click to expand...
Click to collapse
pretty much - there's nothing you can do. I decided to email Sandisk and here's their response:
I understand that the error that appear after format is “write protected”. First we would like to apologize for the inconvenience.
I understand that you are getting write protection error while accessing the flash drive. The flash drive has detected a potential fault and become “write protected” to prevent data loss. There is no method to fix this. You will need to back-up your data and replace the flash drive.
So you have to RMA it. I'm abit confused because others on XDA have successfully covnerted their 64gb cards to FAT32 without any issues.
Could it be a faulty batch of sd cards?.

[Q] SD Card Not Writeable?

It seems that my SD card is not writable when inserted. Is this true? I tried to create a new folder on it with root explorer (I am not rooted though) and it said that my device needs to be rooted in order to accomplish that task.
Any ideas?
Jonn

Did you try something like es file explorer? I would try that.

That didn't work either. It says "operation failed".
I actually noticed that it wasn't working playing act raiser and it wasn't saving my position. Moving the ROM to internal storage worked. I then tried to create a folder.
Sent from my Nexus 7 using Tapatalk 2

Huh. Just tried a different SD card and that one worked. Weird.
Sent from my Nexus 7 using Tapatalk 2

I spoke too soon. After removing the sdcard that worked and putting it back in, it no longer is writeable.
Sent from my Nexus 7 using Tapatalk 2

It works again if I pull the card out, restart the shield and put the card back in. Perhaps something up with the mounting process?
It appears that once a card is mounted, if it is removed and re-inserted, it remounts as read only.
Jonn
Sent from my Nexus 7 using Tapatalk 2

It looks like sdcard mounting is messed up. I can't get any of the sdcards i have tried to mount.

Did you go into settings and actually click unmount before removing the SD Card? Many linux systems (android is linux) will mount devices which werent safely removed in read only mode for some bizarre reason.

I tried that as well. It still doesn't work.
Sent from my Nexus 7 using Tapatalk 2

jonnberg said:
It seems that my SD card is not writable when inserted. Is this true? I tried to create a new folder on it with root explorer (I am not rooted though) and it said that my device needs to be rooted in order to accomplish that task.
Any ideas?
Jonn
Click to expand...
Click to collapse
when you go to storage under settings, under sd card does it show total space for card. if not maybe you have to format it to NTFS first. thats what I had to do with my new card. also said to do so on shield guide

evobunny said:
when you go to storage under settings, under sd card does it show total space for card. if not maybe you have to format it to NTFS first. thats what I had to do with my new card. also said to do so on shield guide
Click to expand...
Click to collapse
I did not read the destructions. The destructions have useful information? Where may i find these destructions? I assumed fat32 so that is what my sd is formatted to.

chevyowner said:
I did not read the destructions. The destructions have useful information? Where may i find these destructions? I assumed fat32 so that is what my sd is formatted to.
Click to expand...
Click to collapse
sorry i cant post link yet cause im new to forum. but go there, (shield.nvidia.com/user-guide/sd-card) user guide said to format it to NTFS

Would has added this sooner, but I lost my sdcard reader.
Formatting it NTFS worked.
Still wont mount, but now i at least get the option to mount.

evobunny said:
when you go to storage under settings, under sd card does it show total space for card. if not maybe you have to format it to NTFS first. thats what I had to do with my new card. also said to do so on shield guide
Click to expand...
Click to collapse
Yes, I formatted it to NTFS before I inserted it. It shows the total space and space available, it just doesn't allow anything to be written to it. I can take it out and put it in a PC and it works correctly. I also have another SD card that I tried and it worked for a few minutes, but I haven't been able to get it to keep working.
Jonn

jonnberg said:
Yes, I formatted it to NTFS before I inserted it. It shows the total space and space available, it just doesn't allow anything to be written to it. I can take it out and put it in a PC and it works correctly. I also have another SD card that I tried and it worked for a few minutes, but I haven't been able to get it to keep working.
Jonn
Click to expand...
Click to collapse
sorry I dont know what else to tell you, i first had the same problem like yall when I stuck in a brand new card. nothing I downloaded would go on to card. and it didnt show the amount of space left under the storage menu. Then i found out it need to be formated to NTFS. Once i did that everything started downloaded and showing up on card.

jonnberg said:
Yes, I formatted it to NTFS before I inserted it. It shows the total space and space available, it just doesn't allow anything to be written to it. I can take it out and put it in a PC and it works correctly. I also have another SD card that I tried and it worked for a few minutes, but I haven't been able to get it to keep working.
Jonn
Click to expand...
Click to collapse
The only memory card I have gotten working (about 1 minute ago) is 512MB and formatted fat32
The card i want to us is a 16gb microsdhc formatted fat32 when this memory card is in my shield it knows it has a memory card but says it has no partitions on it.
I am running testdisk on the sd card and it found 9 partitoins. I will try and clean that up.

To be honest, I've never tried SD card support on the device. So I can't say one way or another. But I'll be looking at it soon enough since I got my first build of CWM for SHIELD waiting for me to debug in the other room once the kids go to bed.

I just tried two different 8GB class 10 transcend cards, an 8GB class 2 generic card and a 256mb sandisk card. I put each card in and copied a file from internal storage to it. Then I removed each of the cards without unmounting and put them back in and proceeded to copy a file to the card again. Every time it worked successfully. I do not even know what format they are in and didn't format them before testing. And, maybe the issue didn't show up because I didn't give it enough time. I am not sure.
Also, I know this is probably a really dumb question but the micro sd slot is spring loaded. You are pushing it in until you hear a good solid click right?

issues
Having issues of my own.
Bought a 64gb sandisk SDXC card for shield. It worked 100% fine in my SGS3 formated for exFat. But not in the shield...
It seems to work somewhat when formated for NTFS. But the file path is really messed up and 1/2 my apps cant see the SD card because of this. It something like (root/storage/sdcard1/....)
2 apps that are basically usless right now due to this are Power amp & FPse.

Android doesn't normally support either exFat or NTFS. The shield may include support for them but if I had a shield I would steer clear anyway and go with what android definitely trusts in FAT32.
Hopefully NVidia will do a firmware update to sort these problems though

[Q] Impossible to partition my new micro sd card 64gb

Hello, i have a problem with my Galaxy Tab 2.7.0 (GT-P3110) with omni-4.4.4-20140820-p3110-NIGHTLY rom installed.
I have bought a SAMSUNG ELECTRONICS IT - MB-MPCGC EU (Samsung microSDXC 64GB Class 10 ) micro sd card and I used it out of the box in my PAD without need to format it.
(in Storage i have found it under SD CARD tab (Total Space 58.45 GB not sure if this is ok) but i don't have the option for Formatting it (only Unmount and after it Erase or Mount)
I can see it with Windows 7 via USB MTP mode and copy files on it but not formatting it
I have tested this card with Sdtools and Sdcardtester on the tab without any problem
Now my problem is that i want to use Link2sd to move my apps on the Sd card but i have no way to make the 2 needed partitions on the it
I have tried to see if Mini Tool Partition would able to see the card from the tab's USB in MTP mode without success, i have tried to use a Sd card reader directly on my Pc with the same result (with another microd sd i was able to have it connected in Windows but this card is only 4 gb)
I have tried this also on a different PC without any luck
I tried to make partition on the card in recovery mode (tried with TWRP_2.7.1.2 and PhilZ-Touch-Recovery_6.57.5 and CWM_6.0.5.0) but in none of the 3 i have found the Partition SD card option inside the Advanced menu...
So after trying everything i'm lost
If anyone have any advice or can give me any help on this i will appreciate it

@lucas1965
See the before site for a tool for partitioning sdcards. Partitioning sdcards will erase all data on the card.
Sent from my SGH-T989

jrc2 said:
@lucas1965
See the before site for a tool for partitioning sdcards. Partitioning sdcards will erase all data on the card.
Sent from my SGH-T989
Click to expand...
Click to collapse
With Aparted (found in the Google Play store) i was able to check the card file system (the app told me that was FAT32 ) and to make 2 partitions
1 Fat32 and 1 ext4 but i still have all the same problems as before also with Link2sd not letting me move apps from the internal memory to the sd but only link them

lucas1965 said:
With Aparted (found in the Google Play store) i was able to check the card file system (the app told me that was FAT32 ) and to make 2 partitions
1 Fat32 and 1 ext4 but i still have all the same problems as before also with Link2sd not letting me move apps from the internal memory to the sd but only link them
Click to expand...
Click to collapse
Stupid tapatalk didn't invited my link like I told it to. Here it is. https://www.sdcard.org/downloads/formatter_4/
Sent from my SGH-T989

Sent from my SGH-T989[/QUOTE]
I was thinking that my english was so bad that i was misunderstanding your first post
I tried that program before but it is not working for me cause i can't get the sd card working in Windows so i can't format it there
Still i was able to solve the big part of my problem because with Aparted launched on the tablet i made the 2 partitions requested from Link2sd to use the function Create Link that will help me a lot
Now i just need to know the best size to have in the 2 partitions. I'm still unable to move all the app but maybe sooner or later someone will find a solution to this .

I was thinking that my english was so bad that i was misunderstanding your first post
I tried that program before but it is not working for me cause i can't get the sd card working in Windows so i can't format it there
Still i was able to solve the big part of my problem because with Aparted launched on the tablet i made the 2 partitions requested from Link2sd to use the function Create Link that will help me a lot
Now i just need to know the best size to have in the 2 partitions. I'm still unable to move all the app but maybe sooner or later someone will find a solution to this .
Click to expand...
Click to collapse
@lucas1965
Your English is just fine
The dying honestly depends on what files you need on your sdcard compared to the source the apps you plan to move to your sdcard will take up. I'd either make them both 32GB or one 16 gb and one 48 gb, the larger one obviously for whichever partition needs to be bigger.
Sent from my SGH-T989

[CM13.0] Internal storage problem

Hello.
I have just wiped my device and installed the newest CM13.0 - Marshmallow (LG G3 D855). After rebooting and configuring my phone I got an information that my SD card is unknown. After pressing the notification the phone asked me if I want to use my SD card as external or internal storage. I read about this in the Web and decided to choose the 2nd option. The card was formatted (it was stucked at 20% for couple minutes and after that time progress bar disappeared - no information about success or errors). Internet said me to reboot my phone after the operation is completed.
Now I have a problem. External storage disappeared. I was expecting it to be a part of my old internal storage (about 10GB + 64GB of my SD). What I saw was still 10GB and nothing more. I tried to go to the settings and checked `Storage and USB`. I found my card but I couldn't check the size and anything (there was an information "Checking...", which didn't refreshed even after 2h of waiting...). I think my SD was FAT32, but I'm not sure.
Now when I put the card into my PC i see it has 16MB of size. I tried to format it with size adjustment into NTFS, exFAT and FAT32 - the size of 64GB came back but after doing factory reset and configuring everything in the same way as I described before, I get same issues (using all the file systems).
After all I got angry and decided to choose using my SD normally as an external storage. In this case I see my card and I'm able to copy data on it, BUT... It has size of 16MB... I'm tired of this and really don't have any ideas how to repair it. I don't care if it is internal or external storage. I want this to start working as expected.
Informations:
- LG G3 D855
- CM13.0 (cm-13.0-20151127-NIGHTLY-d855.zip (290.07 MB))
- MicroSDXC ADATA 64GB CLASS-10 (AUSDX64GUICL10RA1)
[EDIT - SOLVED PARTIALLY]
I have partially solved the problem. I noticed that this 16MB is just a swap space. Probably that's why Android saw it as a partition to use.
I managed to set my SD as an external storage. I used EaseUS Partition Master. I deleted all partitions on my card. Next I created a new UNFORMATTED partition (just a raw partition). Then I put my card into the microSD slot in my G3 and started the phone. I chose `external storage` option and it worked! I tried the same for internal but it hangs at 20% and gets an exception. So for now until they fix this, I will use it in the old way.

Nickon said:
Hello.
I have just wiped my device and installed the newest CM13.0 - Marshmallow (LG G3 D855). After rebooting and configuring my phone I got an information that my SD card is unknown. After pressing the notification the phone asked me if I want to use my SD card as external or internal storage. I read about this in the Web and decided to choose the 2nd option. The card was formatted (it was stucked at 20% for couple minutes and after that time progress bar disappeared - no information about success or errors). Internet said me to reboot my phone after the operation is completed.
Now I have a problem. External storage disappeared. I was expecting it to be a part of my old internal storage (about 10GB + 64GB of my SD). What I saw was still 10GB and nothing more. I tried to go to the settings and checked `Storage and USB`. I found my card but I couldn't check the size and anything (there was an information "Checking...", which didn't refreshed even after 2h of waiting...). I think my SD was FAT32, but I'm not sure.
Now when I put the card into my PC i see it has 16MB of size. I tried to format it with size adjustment into NTFS, exFAT and FAT32 - the size of 64GB came back but after doing factory reset and configuring everything in the same way as I described before, I get same issues (using all the file systems).
After all I got angry and decided to choose using my SD normally as an external storage. In this case I see my card and I'm able to copy data on it, BUT... It has size of 16MB... I'm tired of this and really don't have any ideas how to repair it. I don't care if it is internal or external storage. I want this to start working as expected.
Informations:
- LG G3 D855
- CM13.0 (cm-13.0-20151127-NIGHTLY-d855.zip (290.07 MB))
- MicroSDXC ADATA 64GB CLASS-10 (AUSDX64GUICL10RA1)
Click to expand...
Click to collapse
i cant say this will work, but if i had your problem i would clean off the rom and flash it again, and while in twrp before booting, format your sd card. if that doesnt help, i dont know what else to try.
i didnt know this storage option was added to cm13, but anyways, i would never use external storage as internal. ii have seen people try for years, and usually come back with some problems.

bweN diorD said:
i cant say this will work, but if i had your problem i would clean off the rom and flash it again, and while in twrp before booting, format your sd card. if that doesnt help, i dont know what else to try.
i didnt know this storage option was added to cm13, but anyways, i would never use external storage as internal. ii have seen people try for years, and usually come back with some problems.
Click to expand...
Click to collapse
Tried to reinstall... Same thing happens...

Nickon said:
Tried to reinstall... Same thing happens...
Click to expand...
Click to collapse
well, you have 10 post now, i would try asking in the thread where you got the rom. i dont know what else to suggest. sorry.

bweN diorD said:
well, you have 10 post now, i would try asking in the thread where you got the rom. i dont know what else to suggest. sorry.
Click to expand...
Click to collapse
From official Cyanogenmod website.

Nickon said:
From official Cyanogenmod website.
Click to expand...
Click to collapse
its impossible that there is a thread on xda in the g3 section though right? cause thats not what we do here, post roms and such...

Nickon said:
[EDIT - SOLVED PARTIALLY]
I have partially solved the problem. I noticed that this 16MB is just a swap space. Probably that's why Android saw it as a partition to use.
I managed to set my SD as an external storage. I used EaseUS Partition Master. I deleted all partitions on my card. Next I created a new UNFORMATTED partition (just a raw partition). Then I put my card into the microSD slot in my G3 and started the phone. I chose `external storage` option and it worked! I tried the same for internal but it hangs at 20% and gets an exception. So for now until they fix this, I will use it in the old way.
Click to expand...
Click to collapse
I just ran into this problem on a LS990 (Sprint LG G3) and your post gave me a lead on how to fix it.
I didn't have a microsd reader handy so I used adb shell while in recovery and deleted the partition with fdisk
1. opens ADB
Code:
adb shell
2. This shows you the partitions on your device so you can pick out your external sd card
Code:
cat /proc/partitions
3. mmcblk1 was my external sd card, yours may be different
Code:
fdisk /dev/block/mmcblk1
4. P shows your partitions on the device
Code:
p
5. D deletes the partition on your selected device device
Code:
d
6. O creates a new empty dos partition table
Code:
o
7. N creates a new partition and I accepted all defaults
Code:
n
8. W writes new partition table to disk and exits fdisk
Code:
w
9. I then shut down my phone and removed the microsd.
10. Power phone back on. Once phone has completed boot, insert SD card and it'll give you the option to set up the SD card because it's corrupt. This time, choose portable.
**Note: I'm not an expert by any means and this may be completely unnecessary to go through, but this happened to work for me. Use at your own risk**

up any solution in 2016 ??