[ Thanks to Sensei for this link.
]
“The two types of filesystems you will need to learn how to
make in order to get your Linux multi-partition system up and
running are: swap and ext2, like the ones we just made with
fdisk.“
“The command for this is mkswap. You have to be root to run
this, of course. If you get a “command not found” error, then you
need to enter the full path, which is: /sbin/mkswap “