Linux

So Question: What do you actually want to achieve?

Do you want a rolling, semi-rolling or stable releases? More tested or even LTS packages, or the latest?

Have you tried distrobox ? That would sound more reasonable.

So... I guess it should work but you will end up with looots of partitions and pretty sure you have no idea what is what.

But if you plan on nuking it in the end, here is how to do it:

• install a Distro to full hard drive
• use some partition manager like KDE-Partitionmanager (the best of all) or Gparted and resize the big ext4/btrfs/zfs whatever storage partition as small as you want
• install the next distro into the empty space
• shrink that distros storage again, repeat

And please report if some crazy stuff happens with Grub or if you get secureboot working!

All these people saying don't do it - clearly, they're trying to learn something and are not necessarily after a fully usable, encrypted production system. Instead of telling them it's too complicated, we should encourage to play around and figure it out, so in the process maybe they find out on their own why this configuration might not make any sense in most situations.

So @op, just go for it, you're going to learn a lot from this!

Not really a solution to what you need, but you should consider distros other than manjaro, it does some shady stuff, has ddos'ed the AUR multiple times (even though the AUR is "unsupported") and let the security certificates for their site expire (their solution: to turn back your clock to update the system). You should try endeavour instead.