[issue1129] grml iso doesn't boot via USB disk

[Thomas Köhler]

New submission from Thomas =?iso-8859-1?Q?K=F6hler?= <jean-luc at picard.franken.de>:

Hello all,

I currently use my own remastered grml iso in order to boot my
desktop PC. For that, I once installed an old version of grml via
grml2usb on the first partition of a USB disk, and keep my
personal data on another partition.
In order to use a new version of grml, I just copy the iso to the
first partition, put the kernel/initrd into /boot/<version> and
create another menu entry in the bootloader.
Well, that worked nice until 2011/12/17. My next iteration,
2011/12/23, and all later versions, refuse to boot. Kernel and
initrd will be loaded, but when searching for the GRML file,
modprobe complains about modules "unknown" and "luks" not being
present in modules.dep, and "unable to open '/dev/sdb'" messages
appear. Nothing else will happen from that point on.

The funny thing is, the very same version of grml will boot from
USB after creating a bootable USB stick via:
   grml2usb --grub --grub-mbr latest-grml.iso /dev/sdd1
The difference then is (as far as I can tell):
- findiso kernel commandline switch is not being used, no iso
  involved
- bootable USB stick, everything is on the stick
- stick has only one (vfat) partition
- version of grub used on the USB disk is outdated

I have taken pictures of the error messages:
http://gott-gehabt.de/tmp/IMAG0341.jpg
http://gott-gehabt.de/tmp/IMAG0342.jpg

Attached is also grml-hwinfo's output.

Ciao,
Thomas

-- 
 Thomas Köhler       Email:       jean-luc at picard.franken.de
     <><             WWW:              http://gott-gehabt.de
                     IRC: tkoehler       Freenode: thkoehler
                     PGP public key available from Homepage!

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files: grml-hwinfo-2012-01-05--17-55-53-CET.tar.bz2
messages: 4200
nosy: jean-luc
status: unread
title: grml iso doesn't boot via USB disk

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GRML issue tracker <bts at bts.grml.org>
<http://bts.grml.org/grml/issue1129>
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