Bootloader

1. Apply GRUB workaround:

   echo 'export ZPOOL_VDEV_NAME_PATH=YES' >> /etc/profile.d/zpool_vdev_name_path.sh
   source /etc/profile.d/zpool_vdev_name_path.sh
   
   # GRUB fails to detect rpool name, hard code as "rpool"
   sed -i "s|rpool=.*|rpool=rpool|"  /etc/grub.d/10_linux
   

   This sed workaround needs to be applied for every GRUB update, as the update will overwrite the changes.

2. Install GRUB:

   echo 'GRUB_ENABLE_BLSCFG=false' >> /etc/default/grub
   mkdir -p /boot/efi/almalinux/grub-bootdir/i386-pc/
   mkdir -p /boot/efi/almalinux/grub-bootdir/x86_64-efi/
   for i in ${DISK}; do
    grub2-install --target=i386-pc --boot-directory \
        /boot/efi/almalinux/grub-bootdir/i386-pc/  $i
   done
   cp -r /usr/lib/grub/x86_64-efi/ /boot/efi/EFI/almalinux/
   grub2-mkconfig -o /boot/efi/EFI/almalinux/grub.cfg
   grub2-mkconfig -o /boot/efi/almalinux/grub-bootdir/i386-pc/grub2/grub.cfg
   

3. For both legacy and EFI booting: mirror ESP content:

   unalias -a
   ESP_MIRROR=$(mktemp -d)
   cp -r /boot/efi/EFI $ESP_MIRROR
   for i in /boot/efis/*; do
    cp -r $ESP_MIRROR/EFI $i
   done
   rm -rf $ESP_MIRROR
   

4. Note: you need to regenerate GRUB menu after kernel updates, otherwise computer will still boot old kernel on reboot:

   grub2-mkconfig -o /boot/efi/EFI/almalinux/grub.cfg
   grub2-mkconfig -o /boot/efi/almalinux/grub-bootdir/i386-pc/grub2/grub.cfg
   

Finish Installation

1. Exit chroot:

   exit
   

2. Export pools:

   umount -Rl /mnt
   zpool export -a
   

3. Reboot:

   reboot
   

Post installaion

1. Install package groups:

   dnf group list --hidden -v       # query package groups
   dnf group install gnome-desktop
   

2. Add new user, configure swap.

3. You can create a snapshot of the newly installed system for later rollback, see this page.