IBM PC/XT 3.5" floppy drivers

From: Fred Cisin <>
Date: Sat Sep 6 12:21:00 2003

On Sat, 6 Sep 2003, Rich Beaudry wrote:
> Hello all,
> I have an old IBM 3.5" 720KB floppy, meant to be installed in an XT. The
> kit came with a 5.25" floppy that contained drivers, and a program called
> "35INSTAL.COM". The floppy is totally unreadable, so I cannot complete the
> installation on my XT. Does anyone have this diskette who could loan it to
> me, or make me a copy? I can get the drive's part number, if necessary...
> Thanks!

If you upgrade to DOS 3.20 or newer, then you do NOT need that disk.
If your XT has IBM's BIOS, then you need to add DRIVER.SYS to your
If you are using a non-IBM BIOS, then you can use DRIVPARM instead
(in MS-DOS, and present but not documented in PC-DOS)
NOTE: DRIVPARM is incompatible with IBM's BIOS.

If you want to use DOS <3.20, then you want that disk.
NOTE: SOME versions of MS-DOS 2.11 support 720K.
Received on Sat Sep 06 2003 - 12:21:00 BST

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