On Thu, 05 Oct 2017 08:44:25 -0000, Helmut Jarausch wrote: > sorry, this is a bit off topic. > I have old hardware where the BIOS cannot boot from an USB device. > For testing a Gentoo problem (Balsa) I need to boot an older system. > Is it possible to boot from a cdrom drive and then "switch" to the > kernel with the full init process on a separate (USB) drive? > Is it possible with some Grub2 "tricks"?
It is possible with GRUB, creating a menu entry that boots your USB stick, but how you do this very much depends on how the USB stick is set up. Alternatively, use the PLOP bootloader from a CD, which can then boot from USB - https://www.plop.at/en/bootmanagers.html -- Neil Bothwick Facts are stubborn, but statistics are more pliable
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