How do you use an F disc?

"F" disk used to be for the format disk command. It is no longer used by Windows.

Fdisk is a (DOS) command that starts the formatting of a drive.
The most common use of Fdisk is to partition a new hard drive. After partitioning you still have to format each individual partition before you can use it.
See partitioning as cutting up a hard drive into two or more sections, and formatting as making groves as in old 78 - 45 - 33 records.
If you do not know how to do either one, better ask some specialist to give you a practical training first BEFORE you use that command on your own computer.

To do an Fdisk command you have to go to DOS, type on the prompt "fdisk" , and follow the instructions. But be careful because once started the command can not be reversed and all data in the activated part of your hard drive is lost forever.

Hiiii

Go through following link...
FDISK - The Built In Partitioning Tool (http://oldfiles.org.uk/powerload/fdisk.htm)