I have a slot loading imac that was given to me for my grandson a couple of years ago. The disk became corrupted and I had no recovery disk made. I bought a copy of OS X then found out that I needed 9.X. I purchased a set of 9.2 install disks on ebay. The corruption is gone but now we can't remember the admin password to get past the login screen. Is there a way that I can circumvent the login screen or maybe reformat the disk so that I can start fresh? I can't change the password if I don't remember the present password.