<li>Read the resource [ [http://tldp.org/HOWTO/Partition/fdisk_partitioning.html Partitioning with Use '''fdisk] ] to learn how ''' to properly create a new single primary partition with for '''/dev/vdb''' that fills the entire disk, save partition table (accepting defaults prompts would work), restart your '''fdiskcentos3''' command.</li> <li>Use VM and then '''fdiskformat''' to that partition for file type: '''/dev/vdbext4''' with a Linux single partition that fills the whole disk.</li> <li>Check the messages printed when <code>fdisk</code> exits -- you may need to reboot the system in order for the new partition table to take effect. <li>Now we'll make the new device a '''physical volume''', add it to the '''volume group''', and extend '''lv_root''':</li>