fdisk fdisk /dev/sda p - partition n - new Create new pv pvcreate /dev/sda4 vgdisplay Add new pv to vg vgextend ubuntu-vg /dev/sda4 Check rootfs lv path vgdisplay lvdisplay Resize root fix lvextend --size +19.99G --resizefs /dev/ubuntu-vg/ubuntu-lv