On Thu, 5 Feb 2004, Tony Duell wrote:
AFAIK the original 'IBM' drives were actually
Tandon units -- they're
mechanically and electrically identical (PCB layout, etc). I've used
Tandon parts to fix IBM drives. The only difference is that the IBM ones
have the IBM logo on the faceplate.
During the first six months of the PC (5150), some of the machines
directly from IBM ("IBM Retail Product Center") had the IBM logo on a
drive that still had Tandon labels on it.
MUCH later, IBM started using some other drives, besides Tandon.