Extend Partition

To extend the size of a partition for CentOS. This only works if it is the last partition in the list. This can be accomplished for standard or extended partitions.

Delete the partition and then re-create but make sure the starting point is the same.

If a GPT disk move the GPT Header to the end of the disk.

gdisk /dev/sda
x – Enter the expert menu.
e – Relocate the GPT header to the end of the disk.
m – return to the previous menu.

xfs_growfs /dev/sda5

or depending on your partition type.

resize2fs /dev/sda5