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tuxic@××××××.de wrote: |
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|
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> Hi, |
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> |
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> (Running Gentoo Linux on a 4.9.17 vanilla (ftp.kernel.org) Linux |
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> kernel) |
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> |
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> I was doing a backyp of a 64GB SAMSUNG flash card to my |
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> harddisk....which runs for quite a while... |
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> |
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> For that I mount the partitions and tarred their contents as root |
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> to the harddisk |
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> |
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> Syddenly out of nothing/from nowhere/into thin air or whatever: |
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> read errors happens and the process stops. |
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> |
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> First I thought of the one an most hated failure of harddisks, which |
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> in years of deveopment of computer technology no company was able to |
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> fix: No space left on device. |
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> |
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> But - no,,,the error was a _READ_ error and a 'ls' of the mountpoints |
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> show....nothing but empty directories. |
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> |
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> I tried to unmount/remount the sd card and got this output: |
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> mount: wrong fs type, bad option, bad superblock on /dev/sdb2, |
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> missing codepage or helper program, or other error |
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> |
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> In some cases useful info is found in syslog - try |
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> dmesg | tail or so. |
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> |
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> dmesg gives me: |
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> [ 236.021878] UDF-fs: warning (device sdb2): udf_fill_super: No |
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> partition found (2) |
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> |
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> |
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> UDF??? -- Those partitions are either ext4 or vfat. |
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> (A tried that with and without the -t option...) |
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> |
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> fdisk -l /dev/sdb gave me: |
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> Device Boot Start End Sectors Size Id Type |
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> /dev/sdb1 32768 73433087 73400320 35G 83 Linux |
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> /dev/sdb2 73433088 100696063 27262976 13G 83 Linux |
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> /dev/sdb3 100696064 125042687 24346624 11.6G 83 Linux |
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> |
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> So -- the partition table is still there (I had booted the PC |
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> in between...so these are no ghosts of an abondomed cache...) |
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> |
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> If a certain kernel module woyld be missing I wouldn't not |
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> able to mount the partition right before starting the backyp |
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> - but I could. |
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> |
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> The partition table is there so this part of "DMESG predicts" |
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> is also not applicable here. |
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> |
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> What happens here? Flash killed? Is there any chance to rescye |
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> some or all contents of that card? Any ideas other than |
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> hoping for an alternate reality? |
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|
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You can try to recover some data with photorec (part of |
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testdisk). |
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Btw.: If it is a microsd card I would put it into an |
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microsd-to-sd adapter. I made some strange experiences |
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with different types of card readers when I used microsd |
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cards directly without an adapter. |
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|
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-- |
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Regards |
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wabe |
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