Changes with Macintosh System 7.5.3 Revision 2 Part 1

Article ID: Q153294

The information in this article applies to:
  • Apple Macintosh System Software, version 7.5.3

SUMMARY

This article lists the enhancements that are included as part of the System 7.5.3 Revision 2. This list was taken from the "About System 7.5.3 Revision 2" file that came on the first of two upgrade disks.

MORE INFORMATION

Who should install System 7.5.3 Revision 2?

Apple is recommending that only customers with specific system software and Macintosh computers update their systems with System 7.5.3 Revision 2. There is no benefit for other customers.

The only systems which will benefit from System 7.5.3 Revision 2 are as follows:

  • All PowerBook systems using Connectix RAM DoublerŠ
  • All PowerBook 5300 and PowerBook Duo 2300 systems
  • All PowerBook 200 or 500 Series systems which have been upgraded with the Macintosh PowerBook Processor Card Upgrade Kit with PowerPC (or upgraded with similar third party products).
  • All Macintosh 7200, 7500, 7600, 8500, and 9500 systems

You should install System 7.5.3 Revision 2 only if you have a computer with System 7.5.3 installed or a PowerBook with System 7.5.2, PowerBook Enabler 1.2 or later installed. To find out what system software version your computer is using, follow these steps:

1. Make sure you are in the Finder.

2. Choose About This Macintosh from the Apple menu. 

      NOTE:The system software information is in the About
           This Macintosh window.
What is System 7.5.3 Revision 2?

System 7.5.3 Revision 2 is a set of system software enhancements that improves the reliability and performance for the computers described above.

When you install System 7.5.3 Revision 2, you get the following enhancements:

  • Better reliability for PowerBooks using RAM Doubler If you have a PowerBook using system software 7.5.3, and use RAM Doubler (version 1.6.1 or earlier), you may have experienced a problem when waking your PowerBook from sleep. This software fixes this problem.
  • Overall performance enhancements for PowerBook 2300 computers and PowerBook 500 or Duo series computers with the PowerPC Upgrade Card installed.
  • Improved reliability when using PC-formatted floppy disks with PowerBook 500 series or Duo series computers with the PowerPC Upgrade Card installed.

If you have a PowerBook 500 series or Duo series computer with the PowerPC Upgrade Card installed, PC-formatted floppy disks that were formatted on your computer may be unreadable on MS-DOS or Windows computers. This software fixes this problem.
  • Improved reliability on PCI-based computers (Macintosh 7200, 7500, 7600, 8500, and 9500 computers) and PowerBook 5300 computers, PowerBook 2300 computers, and PowerBook 500 or Duo series computers with the PowerPC Upgrade Card installed.
  • Improved reliability when copying files to a 1 gigabyte hard disk.

If you have a PCI-based computer with a 1 gigabyte drive, this software helps avoid problems when copying files to the hard disk.
  • Improved reliability when using the Startup Disk control panel.

In rare instances, when you turn on a PCI-based Power Macintosh computer it may not start up from the disk selected in the Startup Disk control panel. This software fixes this problem.

Before you Install note that if you have an AppleVision monitor, you should install "AppleVision for System 7.5 Update 2.0 fix version 1.0" before you install this update.

When you install this software, an extension called Startup Tuner is installed in your Extensions folder. This extension ensures that your computer will correctly start up from the disk selected in the Startup Disk control panel.

It is recommended that you run the Disk First Aid application found on the "Disk Tools" disk that shipped with your computer. Double-click the Disk First Aid icon and follow the instructions on the screen. Disk First Aid checks your hard disk for problems. If you have a problem using Disk First Aid, see the manual that came with your computer.

The products included here are manufactured by vendors independent of Microsoft; we make no warranty, implied or otherwise, regarding these products' performance or reliability.

Additional query words: mac powermac 7.5 7.53 pci power ppc 

Keywords          : kb3rdparty kbenv
Version           : MACINTOSH:7.5.3
Platform          : MACINTOSH


Last Reviewed: February 2, 1998
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