Booting grml from the iso file itself

Hi
I downloaded grml96_2011.12.iso and I would be glad to boot this file without having to burn a CD or to write it down to a USB stick.
I've already done this for Ubuntu distros and for Clonezilla, and I found it very helpful.
I've been through the iso file to look for the grub.cfg file and I found out that I could write a little grub.cfg file of my own to launch grub.cfg which resides in the iso file. I got the menu generated by the following lines
for config in /boot/grub/*_default.cfg ; do source "$config" ; done for config in /boot/grub/*_options.cfg ; do source "$config" ; done source /boot/grub/addons.cfg
and I choose the first entry, grml32. The boot process than proceded until I got an error message stating that
BOOT failed grml32 2011.12 Release Codename Knecht Rootrecht [2011-12-23]
And the explanation was
Unable to find a medium containing a live file system.
I suppose this message results from the fact that I've not been able to correctly set the iso_path and the kernelopts variables which are used as parameters of the linux command of the menuentry command.
The grub.cfg file I wrote contains the following commands
function iso_virtuel { search --file --set=root --no-floppy /${2} loopback iso ${1}${2} }
menuentry 'grmliso' { iso_virtuel / "grml96_2011.12.iso" set root=(iso) set iso_path=(iso) configfile /boot/grub/grub.cfg }
Thank's in advance to anybody would could provide me with some piece of advice.
Arbiel

* Arbiel Perlacremaz wrote [18.02.12 00:53]:
I downloaded grml96_2011.12.iso and I would be glad to boot this file without having to burn a CD or to write it down to a USB stick.
function iso_virtuel { search --file --set=root --no-floppy /${2} loopback iso ${1}${2} }
menuentry 'grmliso' { iso_virtuel / "grml96_2011.12.iso" set root=(iso) set iso_path=(iso) configfile /boot/grub/grub.cfg }
The problem is probably that you have to export the iso path otherwise the exported values won't be availabe in the other grub configs. This means you have to add export iso_path to your menu entry.
There are other small issues you should also be aware of:
1) You should use loopback.cfg instead of grub.cfg as loopback.cfg is a more standardized way e.g. ubuntu also supports loobpack.cfg 2) The released grml96 iso image has a wrong grub config (i think you only can boot either grml64 or grml32). You should generate your own grub config with the current grml2usb itself.
Ulrich

* Ulrich Dangel [Sat Feb 18, 2012 at 01:06:52AM +0100]:
- The released grml96 iso image has a wrong grub config (i think you
only can boot either grml64 or grml32). You should generate your own grub config with the current grml2usb itself.
Yeah, it's http://bts.grml.org/grml/issue1134 and already fixed in the daily ISOs and for the upcoming stable release.
JFYI
regards, -mika-
participants (3)
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Arbiel Perlacremaz
-
Michael Prokop
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Ulrich Dangel