Recently I came across many Linux distributions. Before that I've been always using OpenSUSE so some things apparently were quite obvious to me - for example that it's possible and quite easy to set up full disk encryption or arbitrary, custom mount options on installer level. However it seems that actually such option is really exotic and apart from Arch Linux (where it's hard to call it "supported by installer"), probably Gentoo and OpenSUSE I couldn't find any distribution that allows you to encrypt whole disk (including /boot).
Just to avoid confusion - I'm talking about setup where first stage of GRUB asks for password before even showing GRUB menu to unlock initrd, then initrd asks for the same password again to load kernel and other stuff. In OpenSUSE installer it's performed automatically in case /boot is placed on encrypted LVM. However Debian, RedHat, CentOS, Ubuntu, Mint and probably all distros using similar installers claim it's incorrect configuration and refuse to install OS.
Are there any other non-specialized (means those strictly privacy oriented distributions like Tails or Whonix don't really count) distributions apart from mentioned 3 that support such installation scheme?
EDIT: In response to @henriquehbr to be 100% clear on what do I mean by full disk encryption:
There's no separate /boot partition. System asks for password twice: In GRUB:
In the end there's only 1 partition which is encrypted LVM:
What is referred to as "encrypted LVM" in all other installers I know:
Is configuration with separate /boot partition.
Trying to remove /boot partition results in following errors on Debian and Ubuntu:
Sorry for a lot of pictures but I wanted to make it 100% clear.
/and when clicked [ok] intaller told me that
/boothas to be unencrypted :C
compressoptions specific to btrfs...
/bootencryption is unusual and mostly pointless. If you really must have it, you can do it post-install. It should not narrow your distro choices.
/bootshould be stored on external read-only medium? Well yes. But it's significantly less convenient as well. However while this time it didn't disqualify Debian - lack of custom mount flags did. Without
compress=zlibflag it failed to install on 2gb HDD.