# cat /etc/default/grub
GRUB_DISTRIBUTOR="Gentoo"
GRUB_COLOR_NORMAL="light-green/black"
GRUB_COLOR_HIGHLIGHT="black/light-green"
GRUB_DEFAULT=0
GRUB_TIMEOUT=5+
GRUB_CMDLINE_LINUX="rd.luks.uuid=luks-e64febba-fe78-446d-8a3a-f16341f54bab root=/dev/mapper/cryptvol rootfstype=btrfs rootflags=rw,relatime,ssd,space_cache=v2,subvolid=5,subvol=/ init=/bin/bash"