cant find kernel image or initrd image

[KCGD]

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Distribution (run cat /etc/os-release): Ubuntu 21.04

Related Application and/or Package Version (run apt policy $PACKAGE NAME): kernelstub 3.2.0

Issue/Bug Description: I'm trying to use the --add-option command but it fails due to kernelstub not finding the kernel image.

I tried to manually point it to what I think is the kernel image, which it then fails to find the initrd image, I do the same for that and kernelstub loops back to not finding the kernel image again.

Steps to reproduce (if you know): I'm not sure. I previously tested this on Linux mint and no problems occured, but on Ubuntu I get this problem.

Expected behavior: for the --add-option command to work

Other Notes:

[tkircher]

As far as I can tell, kernelstub does not work at all in Ubuntu. The only way to do what you need is to edit the grub configuration directly.