It sounds like your first boot in BIOS is your hard drive. Can you go into BIOS and change it to floppy - save and exit. On restart make sure startup floppy is in the drive and let it run and choose start without cd-rom support with the arrow keys then hit enter. Let it run to the A:> prompt and type in format c: and this should clear your old drive. Don't forget to put power on new drive. If you leave old drive in are you going to use it for backup data, if so set the jumpers to slave. Post back if Achtung! way has worked.
thank you all for the help. is there a site which could have a read up on this? i get a message come up, saying enter the cmos and set the drive to AUTO, which it is already, so i can not move on... :-( so at this moment i have unplugged the slave drive..to clear my brain cells.