I installed grml-rescueboot on my trixie system.
Then, called 'update-grml-rescueboot' which finished with a message like
'Integration completed successfully' (typed from memory).

Now, rebooting the system and choosing the new entry in the grub menu
for grml does not boot a rescue system, but the usual Debian Trixie
(it seems to me something has changed on the screen, boot looks different than
before, so maybe grml tries to boot. Than a flicker appears, and after that
it seems that something like a fallback is activated, which leads to booting
the usual Debian trixie system).

How to debug this issue?
Help welcome.


Holger

* Holger Wansing [Sun Oct 25, 2026 at 10:52:44PM +0100]:

As a starting point, what's the output of the following commands
from your running Debian trixie system:

  dpkg -l | grep grub
  lsblk
  ls -la /boot/grml

Is there any change, when using latest grml-rescueboot v0.7.0 from
our github repos at
https://github.com/grml/grml-rescueboot/releases/tag/v0.7.0
or our repos at https://deb.grml.org/pool/main/g/grml-rescueboot/ ?

If you video record the boot process with your phone, is there
anything visible (e.g. in slow motion then), that might be useful to
know?

regards
-mika-

Hi,

* Michael Prokop [Mon Oct 26, 2026 at 12:27:33PM +0100]:
[...]

My fellow Grml core developer Chris just shared his thought, that
you might have SecureBoot enabled? If so, the default/public Grml
ISOs don't support that, see https://github.com/grml/grml/issues/191

regards
-mika-