I have a Debian server and added a new drive to it but it needed to be ext4. In the past I have used Gparted the graphical front end to parted, but now I figured it worth me doing from the command line, like anything, simple when you know how, but took a while to figure out.
parted
d
mkpart
primary
ext4
0%
100%
The tricky bit was the start and end, I trired using print free to do it in bytes but would keep getting warning which should not be ignored:
Warning: The resulting partition is not properly aligned for best performance
Percentage for start and end works great.
This worked okay but the partition didn't have a UUID when using blkid which I needed to mount using fstab.
I used mkfs.ext4 to format the partition.
sudo mkfs.ext4 /dev/sdc
Finally, added /etc/fstab entry to mount at boot.
/dev/disk/by-uuid/54e5cf14-d1c4-44db-b965-63fbf6ddd71c /media/disk7 ext4 defaults 0 0
To test /etc/fstab works okay without reboot, which is important cause if you mess it up you will have to hook up monitor, keyboard etc to your server.
sudo mount -a
This command tries to mount all disks in fstab.
Should mount okay, hope this saves someone a bit of time.