draft
slackpkg search fuse slackpkg search freetype slackpkg search libpng slackpkg search harfbuzz slackpkg search glib2 slackpkg install fuse freetype libpng harfbuzz glib2
wget https://ftp.gnu.org/gnu/grub/grub-2.04.tar.gz tar xzf grub-2.04.tar.gz cd grub-2.04/ ./configure
nice make -j$j make install
fdisk -l /dev/sda
in case it is a GPT table, do this first (BIOS BOOT PARTITION)
cgdisk /dev/sda type --> ef02 name --> bios-boot partprobe /dev/sda ls -lF /dev/sda5
then proceed anyway
grub-install --no-floppy --boot-directory=/ /dev/sda
grub-file --is-x86-multiboot /xen.gz && echo YES #grub-file --is-x86-multiboot /vmlinuz && echo YES vi /grub/grub.cfg
and see grub setup