IBM 28L2234 manual Conserving DOS conventional memory

memory,

and

too

many

buffer

specifications

might slow

down

your

computer

or

interfere

with

other

programs

that

have

large

memory-usage

requirements.

You

might

be

able to

specify

a

larger

number

of buffers

to enhance CD-ROM

drive

performance

without

adversely affecting programs that have

large

memory-usage

requirements

if you

use

expanded

memory

(see

the

/E

option

in

this

section)

or

if

you

load MSCDEX.EXE

into

high

memory

using

instructions

given

in

the

documentation

that

comes

with

your

operating

system

or

with

the

memory

manager.

/E

This

parameter

instructs

the

computer

to

use

expanded

memory,

if available.

For

example:

C:\MSCDEX.EXE /D:IBMCD1

/E

Note

that

you

must

first

load

an

expanded

memory

device

driver

before

using

this

option.

If

no

expanded-memory

device

driver

is

loaded,

the

following

error

message

displays:

Expanded Memory not present or not usable.

/V

This	parameter	instructs	the computer	to	display a	summary of
RAM	allocation	and expanded	memory usage	at	startup	time.

C:\MSCDEX.EXE /D:IBMCD1

/L:F

Normally,

the

CD-ROM

drive

is

assigned

to

the

next

available

drive

letter

after devices such as diskette

drives

and

hard disk

drives.

Therefore,

you

use

this

option

only

if

you

wish

to

assign a

drive

letter

beyond

the

last

letter

previously

allocated

by

DOS.

/K

This

parameter

instructs

MSCDEX.EXE

to

use

Kanji

(Japanese)

file

structures, if present, rather than

the default

alphanumeric

file

structures.

/S

This

parameter

instructs

MSCDEX.EXE

to

allow

networked

computers

to

share

CD-ROM

drives.

Conserving DOS conventional memory

If	the	CD-ROM drive-support			software	is	loaded in		DOS	conventional
memory (below			640 KB	RAM),	there	might	be	insufficient		memory to
run	some	DOS	applications. The CDSETUP			program		attempts		to load
the	IDE	CD-ROM	drive	device	driver	and	MSCDEX	into	upper
memory,		when possible,		to	avoid this		problem.

/L: drive letter

This parameter

specifies

the

drive

letter

to

be

assigned

to

the

first

CD-ROM

drive. Do

not

assign

a

letter

already

used

by

an

existing

drive

or

your

computer

will

not

be

able

to

access

the

CD-ROM

drive.

For

example,

you

might

use:

3-16 IBM 2X/4X/24X CD-ReWritable Internal IDE Option Kit