Mike Wright:
> > I *think* that there can be only one /boot/efi partition on a disk.
François Patte:
> So how can we proceed when you want a dual (fedora/fedora,
> fedora/debian, fedora.ubuntu....) boot on the same disk?
The idea is there is just one boot/efi on a system (even if you have
multiple drives). I saw someone here talk about having it on a
separate drive for their own reasons that didn't make sense, but it
could make sense for always having *that* drive installed in the PC,
and being able to change other drives around as needed and not be
unbootable.
EFI is its own partition, that will be mounted inside /boot when Linux
boots. I'm not actually sure why that decision was made, I don't see
why we couldn't have just had /EFI. I suppose someone wanted to hide
all the boot things in /boot. On this PC, it's wierdly nested, so
I have /boot/efi/EFI/centos.
Deeper inside EFI are directories for each bootable OS. Generally,
there's a simplistic naming scheme "fedora" for any/all fedora
installation files to go inside it.
If you install other OSs, they should do something similar. You'd have
something like:
... EFI/debian
... EFI/fedora
Which should keep all the OSs separate from each other.
If you wanted dual booting different versions of Fedora, without one
stomping on the others files, it might be worth naming the directories
more uniquely. I'm not sure if there's any straightforward way to do
that.
e.g. ... EFI/fedora39
... EFI/fedora40
Dual booting shouldn't stomp on each other's files, but that is going
to depend on how well the installer is programmed. If you have all
fedora files inside a common /boot/EFI/fedora directory, you have the
fun and games of working out what bizarrely named ******.efi file
you're supposed to use to boot which particular OS version. I've seen
that from someone else's postings on this list.
NB: I don't do dual-booting any more. I gave up that exercise in
frustration many years ago (partitioning drives that weren't quite big
enough, installing multiple drives in a case that probably didn't have
a good enough power supply, learning all the foibles of multiple OSs,
keeping multiple OSs up to date, accessing the files you saved on one
from the other, etc).
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