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Subject:

Installing a 3.5" 720KB FDD in the Apex Plus

Date: 4/19/89

Page: 1 of 1

The newer version of the Apex Plus User's Guide states that the 3.5", 720KB

FDD is not supported however, the system has been tested with and does

support the Epson 3.5", 720KB drive (Model Code A112A - AA).

Installing the 3.5" 720KB drive as drive B:

Ensure the Drive Select jumper on the 3.5" FDD is set to DS1. Replace the

lower floppy drive with the -new 3.5" FDD. If the new FDD does not slide

easily into the lower drive slot, then the top drive and the FDD chassis will

have to be removed. The FDD chassis is held in with 1 screw on each side

of the chassis at the front behind the front panel. After these 2 screws are

removed, the disk drive chassis can be removed be lifting up and forward out

of the retaining slots at the bottom. The 3.5" FDD can then be installed in the

lower position and the FDD chassis can then be reinstalled in the computer.

The top 5.25" FDD can then be installed and the system booted up with MS-

DOS. In order for the system to recognize the B: drive as a 3.5", 720KB FDD,

a CONFIG.SYS file with the following statement must be created or added to

the existing CONFIG.SYS file:

Installing the 3.5" 720KB drive as drive A:

If installing the 3.5" 720 as drive A: it must first be installed as drive B: and

a 3.5" MS- DOS system disk must be created.

MS - DOS system disk in drive A:. Insert a blank 3.5" diskette in drive B then

use FORMAT B:/S to format and copy the system files to the 3.5" diskette.

Use COPY A:*.* B: to copy all the other MS - DOS files from the 5.25" diskette

to the 3.5" diskette.

3.5", 720KB FDD, a CONFIG.SYS file with the following statement must be

made or added to the existing CONFIG.SYS file:

There are no dip switches or jumpers to change on the computer, but the

drive select jumper on both floppy disk drives must be set to DS1.

The 5.25" FDD can then be installed as the lower B: drive and the 3.5" FDD

can be installed as drive A:.

Product Support Bulletin

DRIVPARM = /D:1/F:2

In order for the system to recognize the A: drive as a

DRIVPARM = /D:0/F:2

PSB No: S- 0079

Originator: REM&

Boot the system with the