On 7/2/24 07:44, Frank Bures wrote:
Hi,
I was wondering if it was possible to boot the existing F40 installation
from a USB. I tried to research this but everything I was able to find
dealt with booting a live image of F40 from USB and/or installing a live
image of F40 on a USB.
What I want is to create a USB stick with /boot and /boot/efi fs in such
a way that it boots an existing F40 installation on a HD.
I am not talking about rescuing the system from a live Fedora USB. I am
talking about a fully automatic boot of an existing installed Fedora
from a USB.
Is it possible and what would it involve?
I found this article; it is 8 years old and mostly covers MBR boot but
there is one efi boot example.
https://unix.stackexchange.com/questions/252936/grub2-boot-to-a-second-another-hard-disk
--
This one looks interesting. Harddrives are hdX starting at 0. Add a
menuentry to your usb grub.cfg
menuentry "Boot from second disk" {
chainloader (hd1)+1
}
but changed to this:
menuentry "Boot from first harddisk" {
chainloader (hd0)+1
}
Give it a try and see what happens.
--
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