grub.sh

#ensure you are booted into UEFI mode through the motherboards boot menu
# test if efi mode in bash:
# [ -d /sys/firmware/efi ] && echo UEFI || echo BIOS

# list devices
lsblk -f

# decrypt the encrypted disk/volume
sudo cryptsetup luksOpen /dev/nvme0n1p2 archliger

# mount the kernel volume
sudo mount /dev/mapper/archliger /mnt

# mount the efi partition
sudo mount /dev/nvme0n1p1 /mnt/boot

# mount some random shit
sudo mount -t proc proc /mnt/proc
sudo mount -t sysfs sys /mnt/sys
sudo mount -o bind /dev /mnt/dev
sudo mount -t devpts pts /mnt/dev/pts/

# check if efivarfs is loaded without errors
efivar -l

# add efivarfs to linux kernel
modprobe efivarfs

# mount outside of chroot
sudo mount -t efivarfs efivarfs /sys/firmware/efi/efivars
sudo chroot /mnt
# mount inside of chroot
sudo mount -t efivarfs efivarfs /sys/firmware/efi/efivars
sudo grub-install --target=x86_64-efi --efi-directory=/boot/efi --bootloader-id=manjaro_grub --recheck
update-grub

# https://wiki.archlinux.org/index.php/Unified_Extensible_Firmware_Interface#Requirements_for_UEFI_variable_support