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How to repair corrupted sd card?

does anyone know how to undelete or repair an sd card? It's happened a few times and I usually format and start over. Any help would be appreciated.
Chris

undelete-plus
Try this
http://undelete-plus.com/

yeah when connected to a sdcard reader any pc undelete software will work on it
like the link AthenaLod gave

Rudegar said:
yeah when connected to a sdcard reader any pc undelete software will work on it
like the link AthenaLod gave
Click to expand...
Click to collapse
thanks I will give it a go....
Chris

If you have problems with your memory card in 80% of all cases the controller of your card is damaged and no software or card reader can help. You must separate the memory chip and dump the raw data to recover your data, look here: CF xD SD memory card/stick photo recovery

Repairing a corrupted SD card.
If the SD card is corrupted then it will be because it has boot sector errors. Download DriveRestore Professional and you can scan your corrupted card for errors... you can then repair the card's errors when the product is activated. You can download a free trial at: www.pcrecovery.com/driverestore

don t format in the name of GOD!!!
Please all keep in mind>>>> drive recovery pro is a nice solution,but formatting a hard drive is ok,and important.NOT A SD CARD!!!The continous files are different from the usual hard drive files!!
NO NEED FORMATTING!!!
In fact>>formatting an SD card lower the life time of the card with a good year or more!!Anyhow they made to survive only around two years!!!
The continous upload and erase sssions are killing the SD card.BUT FORMATTING IS TH BIGGEST KILLER.Check the experts,what they say???
Corrupted cards can be deffected from factory as wel,but drive check and restore is the best.The sectors are damaged,and not the fragmantation....
helios

Repairing a corrupted SD card.
DriveRestore Professional will not re-format a corrupted SD card. Formatting is NOT recommended as formatting will erase all the data on the SD card. DriveRestore Professional will analyse the boot sector (that ALL drives have e.g. FAT16 and FAT32 file systems on an SD card), it will detect errors in the boot sector and then repair the errors. When the card is repaired, ALL the files will be accessible and the card is fully repaired.

Sometimes the filesystem on the card gets corrupted. It can happen for example if the card was ejected while a file operation on it was in progress. When that happens you might have trouble accessing some of the files, loading times for some directories in file explorer may be very slow.
You can attempt to fix it using the desktop windows' built-in chkdsk utility.
Open up command prompt (start->run->cmd.exe) and type
chkdsk /X /F <SD card drive letter>
My SD card reader is X:\ drive, so i wold use the following command:
chkdsk /X /F X:
SD card reader is recommended, but probably not necessary because it should also work with WinMo's built-in USB mass storage function or wm5torage.
Under linux you can check/fix the card's filesysterm and in some cases undelete a file using fsck.vfat or dosfsck (single tool, two possible names). Refer to its help for more details.

mr_deimos said:
Sometimes the filesystem on the card gets corrupted. It can happen for example if the card was ejected while a file operation on it was in progress. When that happens you might have trouble accessing some of the files, loading times for some directories in file explorer may be very slow.
You can attempt to fix it using the desktop windows' built-in chkdsk utility.
Open up command prompt (start->run->cmd.exe) and type
chkdsk /X /F <SD card drive letter>
My SD card reader is X:\ drive, so i wold use the following command:
chkdsk /X /F X:
SD card reader is recommended, but probably not necessary because it should also work with WinMo's built-in USB mass storage function or wm5torage.
Under linux you can check/fix the card's filesysterm and in some cases undelete a file using fsck.vfat or dosfsck (single tool, two possible names). Refer to its help for more details.
Click to expand...
Click to collapse
Thank you man, you are a life saver.....

mr_deimos said:
Sometimes the filesystem on the card gets corrupted. It can happen for example if the card was ejected while a file operation on it was in progress. When that happens you might have trouble accessing some of the files, loading times for some directories in file explorer may be very slow.
You can attempt to fix it using the desktop windows' built-in chkdsk utility.
Open up command prompt (start->run->cmd.exe) and type
chkdsk /X /F <SD card drive letter>
My SD card reader is X:\ drive, so i wold use the following command:
chkdsk /X /F X:
SD card reader is recommended, but probably not necessary because it should also work with WinMo's built-in USB mass storage function or wm5torage.
Under linux you can check/fix the card's filesysterm and in some cases undelete a file using fsck.vfat or dosfsck (single tool, two possible names). Refer to its help for more details.
Click to expand...
Click to collapse
wow..thankz

AthenaLod said:
Try this
http://undelete-plus.com/
Click to expand...
Click to collapse
Thanks for sharing.....

I only recently became a (sort of) expert on this as I had a corrupted NTFS bootable partition on my macbook pro with a messed up Master File Table. Man, that was a nightmare.
Anyway, the answer to this question varies greatly depending on the filesystem and the type of corruption you have. Standard Chkdsk might work (the windows utility) although I admit I have no idea how well that works on flash removable media.
Other good options are TestDisk, and there are some other free options out there.
Depending on how important your data is to you and how severe the corruption is you may need to go with a paid application. This is what I had to do because Master File Table corruptions in NTFS are particularly nasty (although some versions of them can be corrected by TestDisk). I recommend GetDataBack which worked great for me.
In any case, try TestDisk out because its a very powerful tool and it is totally free. Read up on the documentation before playing around with it though, because you can cause irreparable damage to any one of your disks if you don't know what you are doing. Ideally make an image of your card using dd (built in linux utility, just type 'man dd' at the cmd line) before attempting to fix it so you can't do anything you can't undo.

hey i formatted my card using card studio in qtek 9100 it formatted 100 % but when i attached it on the card reader then to PC! PC doesn't show this cardddddd help meeee

Instructions
things you'll need:
* SD Card
* Computer
* Internet Connection
*1
If your aim is to repair a corrupted SD card so that you can use it to store files then proceed to step #2.
If your aim is to recover the files on the SD card without erasing them, proceed to step #5.
*2
Insert the SD card into a digital camera card slot and choose to format your card. If this doesn't work then move on to the next step...
*3
Place the SD card into your computers SD card slot.
Right click on the SD card drive letter IF it appears and choose to "format."
If this doesn't work, proceed to the next step...
*4
www.sdcard.org
You will need to go to the website
http://www.sdcard.org/consumers/formatter/eula/
Here you will download, install, and run the program to format your SD card. This is the most advanced step of the three, but most likely to work 99% of the time.
*5
www.cgsecurity.org
If you want to recover files ON your SD without erasing them, then you need to download and run the software on this site.
http://www.cgsecurity.org/wiki/TestDisk_Download
This is the best free software available for this type of problem.

thanks mr deimos for the chkdsk tip.this tip is way quicker fix than the programs mentioned in other posts in this thread

yeah, thanks guys for all your advice and help

mr_deimos said:
Sometimes the filesystem on the card gets corrupted. It can happen for example if the card was ejected while a file operation on it was in progress. When that happens you might have trouble accessing some of the files, loading times for some directories in file explorer may be very slow.
You can attempt to fix it using the desktop windows' built-in chkdsk utility.
Open up command prompt (start->run->cmd.exe) and type
chkdsk /X /F <SD card drive letter>
My SD card reader is X:\ drive, so i wold use the following command:
chkdsk /X /F X:
SD card reader is recommended, but probably not necessary because it should also work with WinMo's built-in USB mass storage function or wm5torage.
Under linux you can check/fix the card's filesysterm and in some cases undelete a file using fsck.vfat or dosfsck (single tool, two possible names). Refer to its help for more details.
Click to expand...
Click to collapse
Thank you for this, saved my uSD card after flashing a kernel messed it up!

On Linux you can try dd_rescue. It creates copy like normal dd but it does not abort on errors.
Copy card to file and then mount this file like drive

Thanks for the chkdsk /X /F
I just had a currupted sd card this morning and was banging my head until I saw this and it fixed it.
THANK YOU!!!!!!!!!!!!!!!!!!!

How to back up the ext2 partion on sd card?

Hi,
I have sucessfully moved my apps and caches to my 1.6gb ext2 partiton on my 8gb sd card.
I would like to back up the ext2 partition in case my sdcard fails.
How do I do this in windows xp?
Thanks

I'd love to find out how to do something similar. I just got an 8 GB card that I'd like to replace my 2 GB card with, basically, I'd like to clone the whole thing over.
Anyone have any ideas? I can do XP or Linux, just curious what software would be able to do the best job of replicating the card from one to the other.

Attach the card to your computer with an adapter (not the phone as it will be mounted by android). Download and install ext2ifs from here. You will now be able to see the files on the ext2 partition and can copy/paste them to where ever you would like.

Thanks, but I've had no luck with ext2ifs and memory cards. They even address it in their troubleshooting section:
I have a device with a removable media, for example a USB memory stick, a Compact Flash Card, a magneto-optical drive etc., which has a partitioned format and has more than one partition. When I insert that media, a drive letter appears for the first partition, but not for all the remaining partitions of the media. When I open "IFS Drives" of the control panel, the considered device appears as a hard disk drive, but there is no partitioning scheme shown for it. How can I create drive letters for the remaining partitions of that removable media? (USB hard disk drives are not affected.)
There is an unsatisfactory answer only: it is not possible.
Windows creates (and deletes) all the drive letters for pure removable devices or removable medias itself. Because the Ext2 IFS software need not to create them, it intentionally does not show any partition scheme for that drive.
Windows creates a drive letter for the first partition of the considered media, but not for the remaining ones. (Windows NT4, 2000 and even XP behave the same way in that regard).
You will run into the same problem if you have a removable media partitioned with two partitions of the FAT type on a computer, which has not installed the Ext2 IFS software! So there is one straight advice only: do not use removable media with more than one partition with Windows.

I'm guessing (someone else could correct if wrong) that if I were to just do the basic copy from one card to another - that would suffice?
If I just took the card, created two partitions (FAT32 and EXT2FS) on the larger card, then copied over all the files in both - that would work just fine?

Strange, I've never experienced any issues with ext2ifs, but yes a simple copy paste of both partitions has been all i needed. Just make sure to copy any hidden files as well.

Can we back it up using Ubuntu Live CD and just upload them to a new sd cards ext2 partition?

yes, but you would need multiple card readers.

andonnguyen said:
yes, but you would need multiple card readers.
Click to expand...
Click to collapse
Why can't you save it to the hard drive, replace the sd card, access the ext2 partition and upload the files that you backed up?
Although I'm not very familiar with Ubuntu, when I tried it last time it didn't even allow me to have access to the app and app-private folders within the partition.
What do I need to do to be able to back it up to the hard drive so I can try to upload it to another SD?

Hi,
Thanks for the suggestion.
But when I installed the driver, I can still see just the fat32 partition not the ext2 partition.
I am using a sdhc usb card reader so it is not connected to the g1.
It is like the ext2 partition does not exist through windows xp.
But when I put the card back in the g1 the files are taking up space through ternminal emulator. So the ext2 partiton does exist but still not accessable through windows.
Any other ideas?
jsunkist146 said:
Attach the card to your computer with an adapter (not the phone as it will be mounted by android). Download and install ext2ifs from here. You will now be able to see the files on the ext2 partition and can copy/paste them to where ever you would like.
Click to expand...
Click to collapse

bestwebs said:
Hi,
Thanks for the suggestion.
But when I installed the driver, I can still see just the fat32 partition not the ext2 partition.
I am using a sdhc usb card reader so it is not connected to the g1.
It is like the ext2 partition does not exist through windows xp.
But when I put the card back in the g1 the files are taking up space through ternminal emulator. So the ext2 partiton does exist but still not accessable through windows.
Any other ideas?
Click to expand...
Click to collapse
what comes up when you use
"busybox df -h" in the terminal emulator?
make sure you see something like "/dev/mmcblk0p2 (partition size) (used) (available) (used %) "/system/sd"
If not then that's the problem.

Hi,
In my phone , I do have that ext2 line /dev/mmcblk0p2
size 1.4gb - used 49 meg - free 1.3 gb
sdcard line /dev/mmcblk0p1
size 6.2 gb - used 5.2gb - free 981 meg
Thanks for the reply.
Binary100100 said:
what comes up when you use
"busybox df -h" in the terminal emulator?
make sure you see something like "/dev/mmcblk0p2 (partition size) (used) (available) (used %) "/system/sd"
If not then that's the problem.
Click to expand...
Click to collapse

If you're on Linux it is trivial to get the files off, if you'd like to make an exact image you can use the dd command. I suggest grabbing a live CD, as it will be a much easier process than making windows see ext partitions.

crater said:
If you're on Linux it is trivial to get the files off, if you'd like to make an exact image you can use the dd command. I suggest grabbing a live CD, as it will be a much easier process than making windows see ext partitions.
Click to expand...
Click to collapse
I have the Live CD, but can you elaborate on the "dd command" exactly. I'm a Linux noob and wouldn't mind backing up the partition. Last time I tried, I couldn't even get permissions to open the files no less copy them.
Thanks.

Insert the two SD cards into USB SDHC card readers. Launch the free MiniTool Partition Wizard program. Copy the ext2 partition you want to transfer on the first SD card to an unallocated area on the second SD card. MiniTool Partition Wizard under Windows does "see" multiple partitions on a USB drive even though Windows doesn't assign letters to those drives and they are invisible in Windows Explorer.
To increase the size of the ext2 partition on either SD card, use the Linux program GParted. Boot up with the GParted Live CD/USB iso file. Run GParted to resize the ext2 partition. (MiniTool Partition Wizard can move but not resize an ext2 partition.)

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

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.

[Q] Can't see Micro SD full capacity ANYWHERE

Hey,
I just sold a HTC Desire phones and had previously partitioned the Micro SD cards from within the recovery tool on the phone to allow for 1GB of the 4GB sd card to be used as part of the system. Now when I want to reuse the card as a regular card, I can only see 2.67GB available. I've tried Easus and MIniTool partition software as well as SDformatter, none of them see the full 4gb. I can't remember now correctly whether I was seeing 2.66gb primary and 1gb unallocated in the windows device manager after having messed around trying to merge them, but now I can only see 2.66 in every program I tried.
Would appreciate any help on how I can see and use the rest of the card

cormie said:
Hey,
I just sold a HTC Desire phones and had previously partitioned the Micro SD cards from within the recovery tool on the phone to allow for 1GB of the 4GB sd card to be used as part of the system. Now when I want to reuse the card as a regular card, I can only see 2.67GB available. I've tried Easus and MIniTool partition software as well as SDformatter, none of them see the full 4gb. I can't remember now correctly whether I was seeing 2.66gb primary and 1gb unallocated in the windows device manager after having messed around trying to merge them, but now I can only see 2.66 in every program I tried.
Would appreciate any help on how I can see and use the rest of the card
Click to expand...
Click to collapse
If you can get your hands on a Linux Machine, a card reader and most importantly gParted. You might be abled to fix it. I have seen mem cards, usb drives etc which cant be recovered on Windows getting rescued by gParted. If you can get gparted, these steps usually work.
1) Select partition [Careful]
2) Goto Device then create partition table.
3) Then format.
Hopefully it should work. Otherwise you might have to use dd.

gr1m.r34p3r said:
If you can get your hands on a Linux Machine, a card reader and most importantly gParted. You might be abled to fix it. I have seen mem cards, usb drives etc which cant be recovered on Windows getting rescued by gParted. If you can get gparted, these steps usually work.
1) Select partition [Careful]
2) Goto Device then create partition table.
3) Then format.
Hopefully it should work. Otherwise you might have to use dd.
Click to expand...
Click to collapse
Thanks for the reply, what's DD?
Would I not be able to do this on a windows machine and it would have to be linux?

cormie said:
Thanks for the reply, what's DD?
Would I not be able to do this on a windows machine and it would have to be linux?
Click to expand...
Click to collapse
bump

cormie said:
Thanks for the reply, what's DD?
Would I not be able to do this on a windows machine and it would have to be linux?
Click to expand...
Click to collapse
dd is a tool (again) on Linux which can clone disks etc. And gParted is a tool which I've heard works on Linux, Windows and Mac. But I've personally never tried it. But getting a copy of linux is pretty easy. Just download the iso (I recommemd Ubuntu, burn it onto a USB or CD and boot it. You can do a live session (Dosen't need to be installed, runs of RAM) then use gparted directly or install it ( 'sudo apt-get install gparted' in a Ubuntu Terminal).

gr1m.r34p3r said:
dd is a tool (again) on Linux which can clone disks etc. And gParted is a tool which I've heard works on Linux, Windows and Mac. But I've personally never tried it. But getting a copy of linux is pretty easy. Just download the iso (I recommemd Ubuntu, burn it onto a USB or CD and boot it. You can do a live session (Dosen't need to be installed, runs of RAM) then use gparted directly or install it ( 'sudo apt-get install gparted' in a Ubuntu Terminal).
Click to expand...
Click to collapse
Hey thanks a lot for such a helpful post, if that's what I have to do, I think it will be a bit too much effort just for the sake of 1gb extra on cards that are only a few euro anyway in the first place. Thanks again anyway but I might just have to leave it