1st of all we need to format the partition
the command of formatting the partition is
then we have to mount the partition to another directory for example we mount the partition on /opt directori. so now we have to cmnd
$mount /dev/xvdf /opt
So now our new volume is mounted on the /opt directory. But not visible. we can check it using the command
Now we have to do visible this partition to the /opt directory
Now check the size.