Yes, I know: I have far too much time available for play.
That fact, combined with a few old, unused SSDs,
and a very roomy computer-case, made me think about
setting up a nice quad-boot machine.
Presently, the plan looks like this:
#1 SSD, the fastest of them all, will contain my main workhorse, Manjaro/Gnome.
#2 SSD will house a Pentoo installation (compiled for my CPU).
#3 SSD is intended for some experimental 'ux,
for tests and scary things that may break an installation (ho-hum).
#4 SSD has to have Win 10, to be compatible with some old client jobs.
All fine, so far. Next task would be to pick a reliable grub/uefi/win/'ux
boot manager, to make life easier for me when switching.
Got any recommendations for one that is easy to administer?
I like to use Grub because it is simple and works well. Recently I tried out systemd boot but it didn’t want to play nice with Windows dual boot so I went back to Grub.
As for your #3, maybe check out a minimal Arch installation with i3 window manager. Really enjoying the feel of it. If you don’t feel like starting from absolute zero, the Archlabs installer makes the setup easy.
Instead of multi-booting, you could try installing Xen hypervisor on a Linux distro that’s the most stable for you. Then you can run all the other OSes as virtual machines with great performance. Simply pass a whole SSD to the corresponding VM. Using PCI passthrough, you can assign graphic cards to VMs in case you need OpenCL, etc.