fsck fails on USB disk and interrupts boot process

[Christoph Bier]

Hi,

I installed an USB disk with a (not encrypted) ext2 file system to
my wife's laptop running Feisty. Now, every boot process is
interrupted by an fsck failure regarding the USB disk---with the USB
disk connected or not. If the USB disk is connected I can run fsck
manually (not with the UUID but the corresponding device ->
/dev/sdb1) without any problems and with "init 6" I can complete the
boot process.

Here's the failure message:

Checking Filesystems ...
fsck 1.40-WIP (14-Nov-2006)
fsck.ext2: Unable to resolve 'UUID =
26ccdf8f-c3d9-4093-804f-71787dd2a5c4'
fsck died with exit status 8

The UUID affiliates to the USB disk.

Why does auto fsck fail? Why is fsck run even if the USB disk is not
connected resp. not powered up? How can I fix this in order that
Ubuntu boots again without an interruption?

Best
Christoph
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