DIY multiboot?

[Der Geist der Maschine]

OK, I see

Code:

apropos kexec
kexec_file_load (2)  - load a new kernel for later execution
kexec_load (2)       - load a new kernel for later execution
pkexec (1)           - Execute a command as another user
systemd-kexec.service (8) - System shutdown logic

Thanks, didn't know there was such a thing.  I seem to always install at least twice before I get things the way I want them.

Use kexec (8). Perhaps run your mini-linux from a initrd, only.

If you don't want to reinvent the wheel then read https://www.landley.net/kdocs/ols/2006/o...-27-38.pdf  - I did not read it, but the title "kboot—A Boot Loader Based on Kexec" seems promising.