Create a partition having size 5 GB and change the syste id '8e'. use partprobe command pvcreate /dev/hda9 Suppose your partition number is hda9. vgextend test0 /dev/hda9 vgextend command add the physical disk on volume group. lvextend -L+5120M /dev/test0/lvtestvolume verify using lvdisplay /dev/test0/lvtestvolume.