Grml-live-remaster (boot problem - busybox)
Hi All.
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
Could anyone help?
Thanks. -- Vadim
* vadim.blajkun@ubs.com vadim.blajkun@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.
regards, -mika-
* Michael Prokop mika@grml.org [20071217 12:11]:
- vadim.blajkun@ubs.com vadim.blajkun@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.
Oh you don't use grml-live at all, I should have read your posting more carefully. ;)
So it might be that you have to use the "-nolzma" option in the mksquashfs command line when building it manually. My previous comments keep valid though. :)
Does this fix your problem?
BTW: I suggest to take a look at grml-live [see http://grml.org/grml-live/ for more details]. :)
regards, -mika-
Teilnehmer (2)
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Michael Prokop -
vadim.blajkun＠ubs.com