3000 HD  (250-4010/4011)          Floppy Drive         Faxback Doc. # 1388

The minimum recommended BIOS ROM for floppy expansion (except a 2nd 360k
5 1/4") is 1.03.00. However, 1.03.02 BIOS ROM or greater is strongly
recommended for full expansion compatibility.

MS-DOS version 03.20.03 and greater will support and combination of
previously mentioned drives. The only relevant difference between 03.20.03
and 3.3 DOS will be reflected in the syntax of the DRIVPARM command.

The following procedure will allow the use DRIVPARM statement in the
CONFIG.SYS file.
	
     PATCH IBMBIO.COM,4EOC,74,EB
     PATCH IBMBIO.COM,1EA1,30,41

The first patch allows the drivparm command to work with 3.3 DOS, while 
the second patch changes the DOS display from 03.30.00 to 03.30.0A to
allow for identification between an original and a patched DOS version.

USING THE DRIVPARM COMMAND

Note: You will need to add the following Drivparm statement to the 
Config.sys file:

With 03.20.03 DOS:
                     DRIVPARM=/D:? /F:?

Where:
        /D  specifies the logical drive number-
            Drive A=0, Drive B=1, Drive C=2, etc.

        /F  specifies the form factor index-
            0=360K floppy (5 1/4")
            1=1.2MB floppy (3 1/2")
            2=720K floppy (3 1/2")
            7=other (1.44MB floppy(3 1/2"))

*NOTE:  Only one "D" is used with 03.20.03 DOS.

With 03.30.00 DOS:   DRIVPARM=/DD:? /F:?
with 03.30.01 DOS:   DRIVPARM=/D:? /F:?

Where:
        /DD specifies the logical drive number-
            Drive A=0, Drive B=1, Drive C=2, etc.          

        /F  specifies the form factor index-
            0=360K floppy (5 1/4")
            1=1.2MB floppy (5 1/4")
            2=720K floppy (3 1/2")
            7=1.44MB floppy (3 1/2")

NOTE:  No patches are needed in any MS-DOS version other than 03.30.00.

Note:  Refer to you Computers MS-DOS manual for information on Editing 
       or Creating a Config.sys file.

(tmc-03/03/95)