Prerequisites

• Existing partition that you know the name. To check the name, run cat /etc/fstab.
• The partition you want to resize have to be the last partition on a particular disk.
• Note that the partition not in use.

Warning

All data will be erased on the partition.

Procedure

Suppose we are re-partitioning /dev/vdb1

1. Remove the partition from fstab

   vi /etc/fstab

2. Unmount the partition

   umount /dev/vdb1

3. Run

   fdisk /dev/vdb1

   Welcome to fdisk (util-linux 2.23.2).

   Changes will remain in memory only, until you decide to write them. Be careful before using the write command.

   Command (m for help):