Packard Bell SPEED.COM and MS-DOS 5.0 and Later (73323)
The information in this article applies to:
• Microsoft MS-DOS operating system 5.0
• Microsoft MS-DOS operating system 5.0a
• Microsoft MS-DOS operating system 6.0
• Microsoft MS-DOS operating system 6.2
• Microsoft MS-DOS operating system 6.21
• Microsoft MS-DOS operating system 6.22
This article was previously published under Q73323
Some Packard-Bell 8086 machines running MS-DOS versions 3.x have a utility
called SPEED.COM that changes the clock speed of the processor from the
standard 4.77 megahertz to 8 or 9 megahertz, depending upon the model. This
utility must be copied into the new DOS directory from either the OLD_DOS.1
directory or the original DOS 3.x floppy disks.
SPEED.COM does not require addition to the SETVER table, but the MS-DOS 5.0
or later Setup program does not recognize SPEED.COM as an add-in utility
that must remain in the DOS directory. Therefore, it must be manually
copied to the DOS directory.
Many Packard-Bell 8086 machines have this command in the AUTOEXEC.BAT file.
MS-DOS 5.0 or later Setup does not place this command in the new
AUTOEXEC.BAT, so you may notice decidedly slower performance when upgrading
to MS-DOS 5.0 or later. Copying SPEED.COM into the DOS directory and adding
SPEED.COM to AUTOEXEC.BAT should correct the problem.
The products included here are manufactured by a vendor independent of
Microsoft; we make no warranty, implied or otherwise, regarding these
products' performance or reliability.
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