apt install grub-pc
v15.0 now has the package available
slackpkg search grub-2
but you might need v2.12+ for F2FS
see grub-source
define your target disk
fdisk -l disk=/dev/sda disk=/dev/nvme0n1 disk=/dev/loop0
define the boot folder – here within the root partition (default)
boot=/boot
–or–in case it is mounted from another system
boot=lala/boot
check your version (need F2FS support?)
grub-install -V
in case it is a GPT table, do this first (BIOS BOOT PARTITION)
cgdisk $disk
(about 1M free space is more than enough)
(it does not matter what partition number / slot you take)
type --> ef02
name --> bios-boot
partprobe $disk
fdisk -l $disk
ls -lF ${disk}*
in any case, you can then proceed
grub-install --target=i386-pc --boot-directory=$boot $disk
and setup grub
while using gentoo admincd (grub 2.12!) w/o chroot
grub-install: error: failed to get canonical path of `LiveOS_rootfs'.
==> see grub-rescue