Dual Boot with GRUB next to GNU/Linux "Debian"

[Kristaps Čivkulis]

Hi,

If you use UEFI, you can do it automatically and almost without
touching your current partitions. Just create new empty partition and
let FreeBSD installer use that partition to automatically divide it
into smaller ones (new EFI partition, root partition and swap). Then
in Linux add new boot entry with efibootmgr so that you can boot into
FreeBSD through UEFI boot menu.