[Grml] Grml-live-remaster (boot problem - busybox)

Michael Prokop mika at grml.org
Mon Dec 17 12:11:18 CET 2007

* vadim.blajkun at ubs.com <vadim.blajkun at ubs.com> [20071217 12:06]:

> I am quite new to the remastering the GRML live CD. I am trying to
> remaster the CD based on the grml-small linux 2.6.20 kernel following
> the procedure described in the "Remastering GRML" HOWTO
> http://wiki.grml.org/doku.php?id=remastering. Everything went Ok until I
> have tried to boot from the resulting ISO - it thrown me to the busybox.

> I have noticed that executing mksqushfs results in the GRML file which
> is about 0.5 MB smaller than the original GRML file, even though there
> were absolutely no changes to the original. If I do not run mksquashfs,
> bit simply recreate ISO using mkisofs, the resulting ISO image works
> fine. I looks that the problem is somewhere in mksquashfs. I use
> mksquashfs distributed with squashfs3.3.tgz via
> http://sourceforge.net/project/showfiles.php?group_id=63835

Looks like you are using LZMA compression (which is the default in
current squashfs version) whereas the grml-small kernel does not
(yet) support LZMA. So either use the current full 2.6.23-grml
kernel or just disable LZMA in grml-live using:

,---- [ http://grml.org/grml-live/ ]
| -z
| Use ZLIB instead of LZMA compression in mksquashfs part of the build
| process.

or via setting SQUASHFS_OPTIONS="-nolzma" in /etc/grml/grml-live.conf
Make sure to use grml-live version 0.0.13.

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