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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 fix sd card ?

i have an 8 Gb sd card that was functioning very well,
untill i partitioned it using cwm and the phone turned off in the middle ( battery was out )
now i have an unallocated space with 1 Gb, i cant format it, and minitool partition wizard says bad disk
please dont say buy a new one it was class 6 and sd cards are very expensive where i live

synos_x said:
i have an 8 Gb sd card that was functioning very well,
untill i partitioned it using cwm and the phone turned off in the middle ( battery was out )
now i have an unallocated space with 1 Gb, i cant format it, and minitool partition wizard says bad disk
please dont say buy a new one it was class 6 and sd cards are very expensive where i live
Click to expand...
Click to collapse
Try again in cwm...
or else insert sd few more times in pc using memory card reader(adapter) til it stops saying bad disk and then try to format in minitool

tried both and still not working
thanks anyway

synos_x said:
tried both and still not working
thanks anyway
Click to expand...
Click to collapse
wats the problem with cwm? Wat error it shows?

Insert it in PC card reader. Find some partition manager, other than mini partition tool, for PC and try to repartition it.
If you use Windows 7 go to Control Panel->System and Security->Administrative tools -> Computer Management -> Storage -> Disk Management
and check if your card (and it's partitions) is shown. If it is try to remove existing partitions and create new FAT 32 partition spaning over entire disc.

i've used easeus partition master, and
easeus partition recovery + partition table doctor +hdd regenerator + sd formatter + minitool partition + [email protected] partition recovery+ flobo
i think it's hopeless
@tomashokenberi all of the programs including disk management , are showing one unallocated partition (1 Gb) and everytime i try to format the partition, the program fails, all of them
@vikraam the cwm just says formatting then done ( nothing else )
somebody said to me to try an mbr tool or program, and i havent found one that works on my pc (x64) do you have suggestions

How many partitions are actually shown in disk management? One or more? If there is more than one partition try to delete all partitions then create one new partition.
Also if your Windows PC uses some "ext2/3 enabler", that is software and driver that allows access to ext2/3/4 partitions from windows it may interfere with disk management and create problems.

it is showing only one partition, i've tryed gparted live cd, on several different pcs and different sd adapters all saying ( access denied, or write protected ), and yes the switch is correct,,
so what should i do now, make a hole in it and use it like a Key Chain

synos_x said:
it is showing only one partition, i've tryed gparted live cd, on several different pcs and different sd adapters all saying ( access denied, or write protected ), and yes the switch is correct,,
so what should i do now, make a hole in it and use it like a Key Chain
Click to expand...
Click to collapse
lol
P.S. : i came all the way down to find a solution

vickkr said:
lol
P.S. : i came all the way down to find a solution
Click to expand...
Click to collapse
Gave me the same bad disk error, I tried every partition manager but nothing worked!
I found my solution by changing my sdcard adapter (or usb card reader) and it works perfectly fine now

tomashokenberi said:
Insert it in PC card reader. Find some partition manager, other than mini partition tool, for PC and try to repartition it.
If you use Windows 7 go to Control Panel->System and Security->Administrative tools -> Computer Management -> Storage -> Disk Management
and check if your card (and it's partitions) is shown. If it is try to remove existing partitions and create new FAT 32 partition spaning over entire disc.
Click to expand...
Click to collapse
THANKS... , :') yo are realy realy solved my problem

solved
tomashokenberi said:
Insert it in PC card reader. Find some partition manager, other than mini partition tool, for PC and try to repartition it.
If you use Windows 7 go to Control Panel->System and Security->Administrative tools -> Computer Management -> Storage -> Disk Management
and check if your card (and it's partitions) is shown. If it is try to remove existing partitions and create new FAT 32 partition spaning over entire disc.
Click to expand...
Click to collapse
Thanks Problem solved

fix sd card
Did you try with a pc via a partition magic program?

bad disk
tomashokenberi said:
Insert it in PC card reader. Find some partition manager, other than mini partition tool, for PC and try to repartition it.
If you use Windows 7 go to Control Panel->System and Security->Administrative tools -> Computer Management -> Storage -> Disk Management
and check if your card (and it's partitions) is shown. If it is try to remove existing partitions and create new FAT 32 partition spaning over entire disc.
Click to expand...
Click to collapse
thanks, though this is an old post but you helped me with my sd card also.

faced the same problem....
simple solution:format with blackberry

Command Prompt
I don't know if the problem was solved. I have suggestions. They are worth trying but not guaranteed to work.
The 'Disk Management' thing doesn't work. I use Windows 10. It gets stuck (becomes entirely Unresponsive) until I pull out the card from the reader. And the same also happens when I double-click or right-click on the SD card in Windows Explorer.
Maybe this can work-
Check the Lock switch on Card. It should not be locked.
On the computer, disable any antivirus feature of auto-scanning USB disks when connected. Also disable Windows USB AutoPlay.
Connect Card to computer with a good card reader.
With Windows Explorer, find the drive letter of the connected SD Card.
Open Command Prompt as Administrator and write
format <drive letter followed by colon : and no slash>
Example - Attached to this post.
If error appears "Insert New Disk and press ENTER", just press 'ENTER' directly.
If error appears "Cannot open volume for direct access", write the format statement in 5th step again.
These errors appear 3-4 times, but keep following the above steps till these statements appear -
"The type of the file system is FAT32. Verifying <your card size>"
Good luck !!
Otherwise, try this http://www.cardrecoverypro.com/

[Q] How to format a micro SD card.

How to format a micro SD card.
I had a HTC Touch Pro2 16gb micro sd card that has about 14gb on it. It was starting to get really slow to copy any size file to it. so i copied off the full contents to my pc (with the micro sd in a card reader) and in windows explorer, did a right click, format, format fat32. I seem to remember the size wasn't exactly correct but cannot remember exactly. format went really quick and i started coping back over my file. the copy stopped saying there was not enough room. tried another format and now it says that there is just 241kb of size (my only option in the drop down), File Systme Fat is my only option, and Allocation Unit Size FAT is my only option. I do not have a Volume label. Any thoughts? Would love not to have to buy a new card.

Try to format in FAT32 once more and do full format, not Quick. preferably via PC

Dancer-Sk said:
Try to format in FAT32 once more and do full format, not Quick. preferably via PC
Click to expand...
Click to collapse
True that. Had the same problem once. What I did was to use a different SD Card reader and delete off the contents first before trying format (non-quick).
If that doesn't work, google for an alternative sd card formatter.

Download Ubuntu Live CD and run it w/o installing. Connect your Cardreader and start the Program "Gparted".
Now you can format your SD-Card in many Datatypes, maybe Windows is faulty at your Cardreader, but with Linux it should work fine.
Ubuntu Download: www [dot] ubuntu [dot] com/download/ubuntu/download
P.S.: If Gparted is not listed in the App Drawer, get it from the Ubuntu Softwarecenter by simply searching "Gparted".

Hi,
Here is a tool what will make formatting a SD Card easy. Just download this tool and select Full erease. Then it will be okay. Also partitions which are hidden are now ereased try it and let me know!
Tip: Search in google SD Formatter 3.1 and select the first link!

The SDFormatter 3.1 did the trick. Windows XP formatter had no options for Fat32 and only saw 224kb of my 16gb micro sd card. The SDFormatter 3.1 recognized the full 16gb. Not really sure about the options. Even though there are only three the FULL options did not seem to work at first but after the quick my card was formatted, windows saw 16gb, copied my data back and now my phone is good. thanks.

Flash memory just gets slower when it get fuller, formating doesnt help that.

Dark3n said:
Flash memory just gets slower when it get fuller, formating doesnt help that.
Click to expand...
Click to collapse
Formatting deletes every thing so it was to speed it up?!? ;/)
Sent from my MB855 using xda premium

Any idea how to format a corrupted sdcard?

I got a class 10 micro sdcard yesterday but when I tried to put music on it the write was like 2M/s. The computer froze in the process so I took the sdcard out before the process was finished. After I restarted my computer the computer wouldn't recognize the card anymore (no show in Computer). It wouldn't be recognized on my phone neither. It did show up on my friend's computer but if I clicked on the disk icon, it asked me to insert a card.....so I guess it might be corrupted because I got it out before the transfer was done.
So is there anyway to format the sdcard (micro sdcard)? I know there are many software that can format the sdcard but they won't work since the computer won't even detect the sdcard....

Wish I knew this as well. I have a corrupted 16GB Micro as well. Trying to format using SDFormatter tells me that it's in read-only mode or some nonsense like that.

Try this first:
http://hddguru.com/software/HDD-LLF-Low-Level-Format-Tool/
Even though windows won't say anything when it's inserted, doesn't mean it wasn't detected, just means windows couldn't mount it. Insert the sdcard and theh download and run the program, selecting the proper drive to wipe.
If that doesn't work u both could try linux. Download any live distro, I recommend slax. Burn it to a CD and boot ur computer from it with the micro sdcard inserted via adapter.
Then use this command with variation to ur specific hardware setup
dd if=/dev/zero of=/dev/???# bs=1M

icenight89 said:
Try this first:
http://hddguru.com/software/HDD-LLF-Low-Level-Format-Tool/
Click to expand...
Click to collapse
there is an official tool by the SD Association https://www.sdcard.org/downloads/formatter_3/

You could try right clicking my comupter>manage>storage and look for your card and format it from there may work may not.

kishke said:
You could try right clicking my comupter>manage>storage and look for your card and format it from there may work may not.
Click to expand...
Click to collapse
wont work, need a low level format
zefie said:
there is an official tool by the SD Association https://www.sdcard.org/downloads/formatter_3/
Click to expand...
Click to collapse
for this specific task, the fs is corrupt, I think my methods would be better

icenight89 said:
for this specific task, the fs is corrupt, I think my methods would be better
Click to expand...
Click to collapse
SD Formatter has revived many of my cards, it will also re-partition them and format it to a single FAT32 (or FAT if its a small card) partition. All you need is the PC to see the device (such as the card reader) in device manager. Also, if you have a supported card reader (90% don't though) it can do low-level functions such as Flash NAND (of the SD Card) erase.
If it doesn't show up, I would agree to try the /dev/zero method under linux, followed by a SD Formatter wipe once the card is back to appearing in device manager.

sd card write problem

hi yesterday I unexpectedly remove sd card (samsung) without unmounting from htc u11 now I can not write to it. can not format the sd card from phone as well from pc. recently I updated my htc u11 to oreo also. I dont know is it because of unexpectedly remove of sd card or oreo update because I dont remember that after oreo update I use(means download something) my sd card. If anyone have the solution thanx in advance.

How old was sd card? Could be just bad luck, and card died, happen to me. And what pc - win version you tried formated? It should let you do it whitout any problems.

If the external sd card was being written to at the time it was disconnected then it will be broken. If it wasn't then try to recover it using a pc.
The oreo update won't have changed anything with the external sd card so you can rule that out.

Sometimes, when you pull out the memory card unexpectedly (also the pen drives or even memory sticks on pc) you can lock the card. It denies to write on it. This happens due to the chip controller of the memory card. The only solution is to repair it on PC with special software tools from manufacturer or from russian/chinese/vietnamese forums which can reset that lock 'flag'. That sw contains drivers to raw access the chip controller.

MoshPuiu said:
Sometimes, when you pull out the memory card unexpectedly (also the pen drives or even memory sticks on pc) you can lock the card. It denies to write on it. This happens due to the chip controller of the memory card. The only solution is to repair it on PC with special software tools from manufacturer or from russian/chinese/vietnamese forums which can reset that lock 'flag'. That sw contains drivers to raw access the chip controller.
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Click to collapse
thanx to all for the reply. This is samsung evo 32 gig sd card. @MoshPuiu please pm me if you know any forum or software.

Hi,
Try to format your SD Card using this tool "MiniTool Partition" on Windows.
https://www.partitionwizard.com/
Windows doesn't do the right job to format SD Cards.
Cheer's

luarpc said:
Hi,
Try to format your SD Card using this tool "MiniTool Partition" on Windows.
https://www.partitionwizard.com/
Windows doesn't do the right job to format SD Cards.
Cheer's
Click to expand...
Click to collapse
thanx for your reply I use it(minitool partition) and also easeus but no one work. They show that your disk is formated but when I check in explorer data is still there. Is there any other software or method to format.

raokashan said:
thanx for your reply I use it(minitool partition) and also easeus but no one work. They show that your disk is formated but when I check in explorer data is still there. Is there any other software or method to format.
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Click to collapse
Try to search something like that: 'mass production utility', usually under this name you can find utilities to access the chips. It is time consuming to find what chip/controller your card use and find an utility which can access that chip since samsung do not publish such a tool...
You can try ChipGenius or another sw to find details, you may digg in sites like 'http://www.flashdrive-repair.com' to find a way of repair.

raokashan said:
thanx for your reply I use it(minitool partition) and also easeus but no one work. They show that your disk is formated but when I check in explorer data is still there. Is there any other software or method to format.
Click to expand...
Click to collapse
So, are you looking for SD card recovery software like this list: https://www.cisdem.com/resource/sd-card-recovery-software.html#FAQ
Or to format the SD Card? https://www.techadvisor.co.uk/how-to/storage/how-format-sd-card-3529689/