* Jos van Wolput wrote in grml's BTS on 20141104 / 10:58:
> On 11/04/2014 04:52 PM, Michael Prokop wrote:

> > Does it work for you with boot option ignore_bootid?
> > How much memory/RAM do you have available?

> Adding ignore_bootid to /etc/defaults/grub-imageboot:
> ---
> IMAGES="/boot/grml"
> ISOOPTS="iso"
> IMAGEOPTS="ignore_bootid"
> ---
> skips the warning 'BOOTID does not match' and starts busybox!

Ok, that's bad.

> I have 4GB of RAM which is enough to run grml64-full_2014.03.iso in RAM

Ok, then I'm afraid the memdisk feature (that's what grub-imageboot
is using) in the initramfs got broken, so this needs further
investigation.

You could use grml-rescueboot as an alternative, if that would be an
option for you.

regards,
-mika-