Partitioning in order to make running multiple distros as convenient as possible

[mrvictory]

My opinion is that you shouldn’t use partitions at all. Well, it is my opinion so take it with a grain of salt​

My random project

For years I have had a zfs setup on my main workstation that I have really enjoyed. Multiple Linux distros setup to multi-boot from the same zpool with lots of things transparently shared between all of them. Of course, zfs isn’t for everyone and there are a limited number of distros that even support it fully. As a challenge, I thought I might take a similar approach on my laptop except this time using btrfs. While btrfs lacks many zfs features and conveniences, I believed it would be possi…

The idea is to create a single BTRFS partition and moving distros to different subvolumes.
I currently have only Windows and 1 Linux distro installed and managing even that is difficult for me, creating many partitions for many distros would inevitably result in lost disk space and complicated booting.
This is how I do it:

• Install any Linux distro as normal. Choose your BTRFS volume as root and disable formatting
• Boot from live media, from the live media
  • Move the subvolumes
  • Mount subvolumes and EFI partition
  • Edit /etc/fstab
  • Reinstall bootloader
• Add new installed bootloader to your current bootloader of choice. If you use GRUB, use the command configfile.