SD card partition table corrupted

A

axcairns

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Hey all,

I bought an 8GB SDHC for my AA1 storage expansion slot, it was recognised and i was able to format it and put it to use. However, every few suspend/resume cycles the disk refuses to mount and the following messages are shown -

Code: 
[  146.892934] EXT3-fs error (device mmcblk0): ext3_check_descriptors: Block bitmap for group 1 not in group (block 0)!
[  146.897994] EXT3-fs: group descriptors corrupted!

fdisk -l
Code: 
Disk /dev/mmcblk0: 8168 MB, 8168931328 bytes
4 heads, 16 sectors/track, 249296 cylinders
Units = cylinders of 64 * 512 = 32768 bytes
Disk identifier: 0x00000000

Disk /dev/mmcblk0 doesn't contain a valid partition table

Recreate the partition in fdisk and the data is still there.

Has anyone experienced this?

Allan
 
I had this problem when using putting the laptop in standby and waking it up again.

I think you should unmount it before putting into standby.
 
qball said:
I had this problem when using putting the laptop in standby and waking it up again.

I think you should unmount it before putting into standby.
Click to expand...

I generally do a sudo umount and then a sync. It takes up to 5 seconds to do the syncing, but I generally don't have any problems re-mounting cleanly.

I don't have a problem with locking as I only have data on the SDHC, so unmounting is fairly unproblematic. One would possibly have to have a script killing all processes utilizing the SDHC before suspend to have a guaranteed unmount.

Apparently Acer has a patched sdhc driver for Linpus, it might be that this driver has a USB_PERSIST-like feature for SDHC that prevents the reader from resetting, requiring the unmount-remount.
 
how do you sync?

i've got the same problem at the moment, the partition table of my sd card is corrupted, and my home partitionis there ;) i can't install testdisk and i don't ifnd any way to regain the partitiontable
 
Petaramesh's kernel kicks serious butt! Tell everyone with an Aspire One to _get_ this now!

It fixes the suspend / SD corruption issues, suspend / sound issues, and fixes the need for a custom WiFi install!

Rush to:

http://petaramesh.org/post/2008/09/01/N ... Aspire-One

use the latest one, Noyau Ubuntu Aspire One 2.6.27-a1sp011 and its matching header.

Everything works!
 
at least i'm using this kernel ;) or at least the last version of it, but at the moment i can't install anything so i have to live with the allready installed features...

any ideas?
 
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