I'm trying to reformat my hard drive, and I get the a message that says that the volume is in use by another process. It gives me the option to force a dismount, and after I say yes to that, it says that it cannot lock the drive and the volume is still in use.

I've seen that other people have had similar problem, but solutions that would work for them don't seem to work for me.

I don't have an a: drive which limits what I can do.