Name:         PowerBook VM Tuner

Version:      1.0

Released:     March 12, 1997

Requires:     System 7.6

Description:

The PowerBook VM Tuner enhances system stability while using

virtual memory on the PowerBook 1400 with Mac OS 7.6.

Previous or later versions of the system software do not

require this extension.



This software consists of a self-extracting archive. To use,

download it to your hard drive and then double-click it to

decompress the software.



From the Read Me included with this software:



Important Information About the PowerBook VM Tuner



The PowerBook VM Tuner enhances system stability while using

virtual memory on your PowerBook 1400. During the

manufacturing process, the PowerBook VM Tuner file is

preloaded into the System Folder on your hard disk, but it

is not part of the "Install Mac OS" system software

installer. Therefore, if you reinstall the Mac OS 7.6 system

software, you may need to manually reinstall the PowerBook

VM Tuner file.



This document describes the PowerBook VM Tuner and when you

need to reinstall it.



What Is the PowerBook VM Tuner?



The PowerBook VM Tuner is a system extension that enhances

system stability on PowerBook 1400 models when running

memory intensive applications. It eliminates a problem with

moving the cursor during heavy memory use while virtual

memory is turned on.



Who Needs to Install the PowerBook VM Tuner?



The PowerBook VM Tuner was preloaded into the System Folder

during the manufacturing process, but if you reinstall the

Mac OS 7.6 system software, you may need to manually

reinstall the PowerBook VM Tuner file. If you do a "normal"

system software installation, you do not need to reinstall

the PowerBook VM Tuner. If you do a "clean" system software

installation, you will need to reinstall the PowerBook VM

Tuner.



A normal system software installation replaces changed

system files and adds new ones, but leaves alone other files

(such as the PowerBook VM Tuner). A clean system software

installation creates a new System Folder on your hard disk.

The old System Folder is renamed Previous System Folder.

Since your computer has a new System Folder, you must

reinstall the PowerBook VM Tuner in the new System Folder.



For more information about the differences between a normal

and a clean installation of system software, refer to the

Mac OS installation instructions in your PowerBook 1400

user's manual.



Installing the PowerBook VM Tuner



To install the PowerBook VM Tuner after performing a clean

installation of system software, follow these steps.



1. While holding down the Option key, drag the PowerBook VM

Tuner to the icon of the System Folder on your hard disk.



2. Click OK in the dialog box that appears.



3. Restart the computer.



Copyright 1997 Apple Computer, Inc. All rights reserved.

Apple, the Apple logo, Mac, Macintosh, and PowerBook are

trademarks of Apple Computer, Inc., registered in the U.S.

and other countries. All other product names are trademarks

or registered trademarks of their respective holders.

Mention of non-Apple products is for informational purposes

and constitutes neither an endorsement nor a recommendation.

Apple assumes no responsibility with regard to the

selection, performance, or use of these products.

