We received no further bugreports regarding this issue for more than 2 month. 
So either we really fixed the bug or no one is using this feature. ;) Closing 
this bugreport therefore, please re-open it if you can reproduce this problem.

Michael Prokop <mika@grml.org> has uploaded a package that may fix your bug.
Please test the package and inform the maintainer whether
version 1.0.5 of grml2hd works as intended or not.

Thank you

The changelog is attached below

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Hash: SHA1

Format: 1.7
Date: Wed, 25 Jul 2007 13:13:50 +0200
Source: grml2hd
Binary: grml2hd
Architecture: source all
Version: 1.0.5
Distribution: unstable
Urgency: low
Maintainer: Michael Prokop <mika@grml.org>
Changed-By: Michael Prokop <mika@grml.org>
Description: 
 grml2hd    - make a harddisk installation of grml
Changes: 
 grml2hd (1.0.5) unstable; urgency=low
 .
   * make sure the sed command does not fail when using /dev/ice
     syntax inside the replacement
   * when using LVM do not run grubdevice $PARTITION [Testing: issue243]
   * check for dmraid signatures (needs some testing in reallife)
Files: 
 bd8811cf79c63d67962780ba2ec41c7a 573 grml optional grml2hd_1.0.5.dsc
 fd57d55ba348201795348edfcc78b922 291880 grml optional grml2hd_1.0.5.tar.gz
 13ed2a929b7727efeeae04dde12b8f05 293950 grml optional grml2hd_1.0.5_all.deb

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When installing grml2hd on LVM via:

LVM=/dev/mapper/x61-grml2hd grml2hd

and choosing /dev/sda as bootmanager target the grub code inside grml2hd uses:

grubdevice /dev/mapper/x61-grml2hd

which fails (Error: could not find a grub device).