Mount the file systems
Mount the root volume to /mnt. For example, if the root volume is /dev/root_partition:
# mount /dev/root_partition /mnt
Create any remaining mount points (such as /mnt/efi) using mkdir(1) and mount their corresponding volumes.
If you created a swap volume, enable it with swapon(8):
# swapon /dev/swap_partition
genfstab(8) will later detect mounted file systems and swap space.