IBM 09N4076 User Manual
Page 56
/M:nn
This parameter specifies the number of sector buffers for temporary storage of
the most recent CD data. For example, to specify 12 sector buffers you would
use:
C:\MSCDEX.EXE /D:IBMCD1
/M:12
The CDSETUP program sets this value to 10. The default value for MSCDEX
with no /M parameter is 4.
You can improve CD-ROM drive performance when you use larger default
values. However, each buffer uses about 2 KB of 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.
/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:
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.
2-16 IBM 4X/8X/32X CD-ReWritable Internal IDE Option Kit