HOWTO - GPT/UEFI install with full disk encryption: BTRFSonLUKS with separate root, home and pkg subvolumes; hibernation with a swapfile; auto-snapshots with easy system rollback (GUI); boot into snapshots

No, it’s basically just the drive info grub will show you that you need to add to rEFInd.

When you boot and are asked for a password, it says something like
Enter passphrase for hd0,gpt2 (UUID of that device) :

The info “drive 0, partition 2” (/dev/sda2/) should point you in the right direction.


[EDIT]
Maybe check this old post for some pointers.

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