Two distributions on one disk, am I installing correctly?

Question

GRUB

Good afternoon, you need to install two distributions
1. Xubuntu
2. Manjaro

Both OS must be encrypted, because. on a laptop
I'm new to Linux, I can only install one OS on prompts ...
Laptop with bios

Do I understand the sequence of my actions correctly? I partitioned the disk into /boot, then a partition for xubuntu (/), and then another partition for manjaro (/).
Grub in /boot will be shared in this case and it will be possible to choose between two operating systems? But how to encrypt them all, set a password for each, will the bootloader find them?

Answer 1

You set passwords (and/or keys) not for systems, but for partitions. The loader will find it. Of course, in one of the systems, the one that you will install second, during installation, you will not need to set it rough. Of course, /boot does not need to be encrypted. If you want settings to be shared between two systems, make a shared partition with /home