Display article   Subject:  Patch for HL, 3.5" Disk Change
   04/30/97   18:16:08


PATCH TO ENABLE TANDY 3000 HL TO RECOGNIZE 3.5" DISKETTE CHANGE

With 3.5" drives on the Tandy 3000 HL (25-4071) and MS-DOS 03.30.00
(25-4109), the system does not recognize a change of diskettes.  For
example, if after taking a directory of a 3.5" floppy, another diskette
is inserted and a directory is taken of the second diskette, the
directory of the first diskette is displayed.  This problem arises when
installing an application program which contains multiple volumes.

There is an official patch to MS-DOS 03.30.00 which enables the DRIVPARM
statement in the CONFIG.SYS file to recognize the disk change and modify
the version number.  The patch lines are applied to the hidden system
file IBMBIO.COM and are:

--PATCH IBMBIO.COM,4EOC,74,EB
(This is what actually enables DRIVPARM to be used.)

--PATCH IBMBIO.COM,1EA1,30,41
(This changes the message seen at boot from "Tandy Version 03.30.00" to
"Tandy Version 03.30.0A".)


Once these patches have been applied, edit the CONFIG.SYS file to
include the appropriate DRIVPARM statement.

Where Drive A is defined as a 720K drive:  DRIVPARM=/DD:0 /F:2

Where Drive B is defined as a 720K drive:  DRIVPARM=/DD:1 /F:2
