µSD card problem with I/O errors. Card broken?

Karl_Yeurl · 2014-05-12 10:37:52

Hello,

I've bought a big (64 Go) µSD card for my SanDisk Clip+ player. I've formatted it to FAT 32 (as required by both the mp3 player's native operating system and Rockbox). The formatting went smoothly and I started copying data on the device. After some time, copying started slowing down significantly. After some more time, it was done, and I waited for a while again. Messages from the computer's shutdown showed that the system had some trouble unmounting the card.

I started all over again, but this time, I just copied a small amount of data on the card (about 300 Mo) and ran the sync command after completion. This came as dmesg's output.

...
[   57.139508] mmc0: new high speed SDXC card at address 2187
[   57.139874] mmcblk0: mmc0:2187 APPSD 62.5 GiB 
[   57.140652]  mmcblk0: p1
[  426.513565] mmc0: Timeout waiting for hardware interrupt.
[  426.787076] mmcblk0: error -110 transferring data, sector 34136, nr 69, cmd response 0x900, card status 0xc00
[  426.787291] end_request: I/O error, dev mmcblk0, sector 34177
[  426.787296] Buffer I/O error on device mmcblk0p1, logical block 32129
[  426.787299] lost page write due to I/O error on mmcblk0p1
[  426.787302] end_request: I/O error, dev mmcblk0, sector 34178
[  426.787304] Buffer I/O error on device mmcblk0p1, logical block 32130
[  426.787306] lost page write due to I/O error on mmcblk0p1
[  426.787309] end_request: I/O error, dev mmcblk0, sector 34179
...

That doesn't look good, and several questions come to mind. Is the card broken? It sure doesn't look too good, but the card is brand new, and it's not a no-name card (although I bought it on the Internet, so maybe it's a fake?). At first, I've thought of a filesystem issue, so next I'm gonna look into that.

If anyone knows a good way to figure out what's happening, I'd be more than happy to try it.

Last edited by Karl_Yeurl (2014-05-12 11:50:02)

Karl_Yeurl · 2014-05-12 11:49:32

It took some time to format my card to ext4, and the same error occured.

It looks more and more like a hardware issue. Guess I'll have to buy a new card.

Photor · 2014-05-12 16:42:16

Hello Karl_Yeurl,

maybe you can try to write an image directly onto the card. I once had an USB-stick with similar error and no chance to format. Then I wrote a boot-image onto the stick - and now it's alive again (with FAT-fs, but I can use it as normal stick). I think it's worth to try.

Ciao,

Photor

Karl_Yeurl · 2014-05-12 23:40:23

Hi,

Thanks for the suggestion.

Actually, I am able to format (it is true that gparted has hung on start, but mkfs successfully managed to format the SD card). It seems that there are I/O errors whatever the filesystem, though (as I tried to format to ext4 and got errors as well once the formatting was done). Writing directly an image is, unfortunately, not very likely to help. The more I think about it, though, the more I'm convinced the card is defective and beyond salvation.

Karl.

Last edited by Karl_Yeurl (2014-05-12 23:41:06)

R00KIE · 2014-05-13 14:37:07

Karl_Yeurl wrote:

The more I think about it, though, the more I'm convinced the card is defective and beyond salvation.

Either defective or a fake. Some fakes look very similar to the real thing, from packaging to product.

Arch Linux

#1 2014-05-12 10:37:52

µSD card problem with I/O errors. Card broken?

#2 2014-05-12 11:49:32

Re: µSD card problem with I/O errors. Card broken?

#3 2014-05-12 16:42:16

Re: µSD card problem with I/O errors. Card broken?

#4 2014-05-12 23:40:23

Re: µSD card problem with I/O errors. Card broken?

#5 2014-05-13 14:37:07

Re: µSD card problem with I/O errors. Card broken?

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