I just added an old Maxtor 300Gig IDE Drive to my new system. Everything looks fine in the BIOS, but it isn't visible to Fedora - I can't mount it to the file system. All my other Drives are SATA including the boot drive, they're all fine.
It is all one NTFS partition, but Fedora usually doesn't have any trouble with this. On my old system (also Fedora 11) I had both read and write access to the drive without any problems.