formatting of main drive
I have recently purchased a used computer that has linux Fedora on it and I wish to put Ubuntu on it. the individual who had it before me did not give me the root password and I have no way of contacting him. My question is, how can I simply format the drive ? I have the proper install disks for Ubuntu but it does not give me the option of formatting the drive prior to install. I have searched google etc but when i try the command to fdisk at the command prompt i am told there is no such command. I know this is probably a very basic question for most of you but any responses would be appreciated.