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Subject: Corrupt bootsector or partition table
From: Gajdos_at_metatem.net
Date: 2004-05-11


Has anyone experinced strange things happening to the partition table?
Sometimes I cannot mount my JBR20 under gentoo linux, because it seems
that the USB subsystem doesn't recognise the partition table - so it can't
decide if there is a partition.

Log excerpt:

Apr 30 18:09:27 barf usb 3-2: new high speed USB device using address 6
Apr 30 18:09:28 barf scsi5 : SCSI emulation for USB Mass Storage devices
Apr 30 18:09:40 barf Vendor: HITACHI_ Model: DK23DA-20 Rev: 00J2
Apr 30 18:09:40 barf Type: Direct-Access ANSI SCSI revision: 02
Apr 30 18:09:40 barf SCSI device sda: 39070080 512-byte hdwr sectors (20004 MB)
Apr 30 18:09:40 barf sda: assuming drive cache: write through
Apr 30 18:09:40 barf /dev/scsi/host5/bus0/target0/lun0: unknown partition table
Apr 30 18:09:40 barf Attached scsi disk sda at scsi5, channel 0, id 0, lun 0
Apr 30 18:09:40 barf Attached scsi generic sg0 at scsi5, channel 0, id 0, lun 0, type 0
Apr 30 18:09:40 barf WARNING: USB Mass Storage data integrity not assured
Apr 30 18:09:40 barf USB Mass Storage device found at 6

And then after a couple of hours or days it suddenly works again, just to
stop working when I need it the most - yeah, you know when: When the
.playlist_control file becomes corrupted and the AJBR won't boot at all.

dosfsck complains about "bootsector not matching backup" or something like
that, and the first text strings seen when hexdumping are in french and
the rest in english. What a mess.

And now suddenly I can't acces one of the directories...

Fun in da house.

I'll wipe the whole disk some day, but it's not that fun, but does anoyone
have any bright ideas what to do in the meantime?
/JG
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