IBM 37L1388 manual Erratically

You cannot access the CD-ROM or the CD-ROM icon does not display (OS/2).

Your	CD-ROM	device driver	might	not	be loaded	or	cannot be	found.	Before
checking	the	CONFIG.SYS	file,	make	a backup copy	of	this	file in	a convenient
directory.

1. At the DOS prompt:

a.Type copy CONFIG.SYS CONFIG.IBM, and press Enter.

b. Type copy AUTOEXEC.BAT AUTOEXEC.IBM, and press Enter.

2.

Use

a

text

editor

such as

EPM

or

E

from

the

OS/2

prompt.

The

following

instructions

use

the

EPM

editor.

Type

EPM CONFIG.SYS,

and

press

Enter.

3.

Check

for

the

lines

that refer to the device driver.

DEVICE=C:\OS2\BOOT\OS2CDROM.DMD /Q

IFS=C:\OS2\BOOT\CDFS.IFS /Q

DEVICE=C:\OS2\MDOS\VCDROM.SYS

BASEDEV=IBMIDECD.FLT

If

these

lines

are

not

present,

add

them.

4.

Save

any

changes

and exit

the

CONFIG.SYS

file.

5.

Check

that

the

device

drivers

are

on

the

hard

disk

drive

and

in

the

correct

directory.

C:\OS2\BOOT\OS2CDROM.DMD

C:\OS2\BOOT\CDFS.IFS

If

the

drivers

are

not

present,

reinstall

them.

See

the

READ.ME

file

on

the

40X-17X Internal

IDE

CD-ROM

Drive

Option

Diskette

for

more

information.

The CD-ROM is not recognized

by

the

operating

system

or

the

drive

performs

erratically.

Some

computers,

such

as

IBM

PS/ValuePoint

models

6472,

6482,

6484,

6492,

and

6494,

have

a compatible

and

ahigh

performance

mode

for

mass

storage

devices.

Normally, the CD-ROM drive functions

better

under

high

performance

mode.

However, if your drive is

not

functioning

properly

in

that

mode,

you

might

need

to use

compatible

mode.

Check

the configuration-setup information

for

your

computer.

1.

Access

your

configuration

utility

program.

2.

Select Devices .

3.

Scroll

down

to

the

Mass

Storage

Devices

section.

4.

Mass

Storage

Devices

contains

the

entries

Primary

IDE

Mode

and

Secondary

IDE

Mode.

These

entries

are

used

to

set

the

performance

mode

of

each

IDE

port.

Set

the

mode

to

Compatible

for

the

port

on

which

you

installed

your

CD-ROM

drive.

Other

IBM

and

non-IBM

computers

might have

similar

settings.

Check

to

see

if

your

BIOS

or

configuration-setup

utility

provides

for

compatible

and

high performance

modes

for

IDE

performance.

For

these

computers, use

the

compatible

mode

for

slower

IDE

devices,

such

as

this

CD-ROM

drive.

Refer

to

the

documentation

that

comes

with

Part 3: Appendixes 3-11