Start by booting from a floppy and seeing if you can see the hard disk.
You didn't mention what error you get when you attempt to boot from the hard disk, could it be that you don't have any active partitions set? Fire up FDISK on the boot floppy and check what's on the hard disk.
You didn't mention what error you get when you attempt to boot from the hard disk, could it be that you don't have any active partitions set? Fire up FDISK on the boot floppy and check what's on the hard disk.