Bernard Rosset via Dng <dng@???> writes:
> Thank you for those precious steps on how to swap a kernel version in
> an ISO!

[...]

Something I should have mentioned as well: The installation kernel needs
(at least) support for initramfs/initrd, the RAM block device and
devtmpfs compiled in order to boot the installation system.

The (non-expert) install option is also very helpful here because it
suppresses the stack backtrace which gets normally printed in case of a
kernel panic which means the actual error message (at the beginning of
the output) remains visible (instead of the generic "cannot mount root
filesystem" at the end of it).