Early 3.5" Floppy Drives

Chuck Guzis cclist at sydex.com
Mon Dec 12 15:17:53 CST 2005

On 12/12/2005 at 12:50 PM Fred Cisin wrote:

>January 1986, PC-DOS 3.20 supported 720K 3.5".
>Later in 1986, PC-DOS 3.30 supported 1.4M.

The 720K 3.5" drive was introduced by IBM in 1986 as an option for the
standard PC-PC/AT product line.  What I recall about the PS/2 was the
support for DSHD and DSED 3.5 diskettes.  In fact, drivers had been
available earlier than PC-DOS 3.2 from third parties for 720K 3.5" drives.


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