Working with External Drives on Ubuntu

To see all drives, you can type in the command:
```
df -h
```
If you want to format a drive, you can type in the command:
```
sudo umount /dev/sdXX
```
Where /dev/sdXX/ is the name of the drive you can find using the command df -h.

You must then create a file system in the drive, and you can do this with the mkfs command.