Installing Mac OS 8.5

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Installing Mac OS 8.5

This document describes how to install Mac OS 8.5. It includes compatibility information, instructions for the Install Mac OS application program, and basic installation troubleshooting.

For more detailed information, see the Mac OS installation manual.

Before you install

•Turn off any security software that you may have installed on your computer.

•If you have a PowerBook, make sure that it is plugged into AC power and set not to go to sleep.

• Start up your computer using the Mac OS CD-ROM disc. See your installation manual for instructions.

Note: If you're installing the Mac OS from a network, you won't be able to start up using the CD. Before installation make sure your computer has AppleShare software version 3.6.4 or later. See the document in the AppleShare folder in the Utilities folder for instructions.

If you can't start up with the Mac OS CD, or you're installing from a network, be sure to do the following additional steps:

•Turn off any virus-protection software that you may have installed on your computer.

•Disable all non-Apple extensions and control panels. See the installation manual for more details.

•Restart your computer before installing Mac OS 8.5.

Although compatibility problems are not expected, you can ensure a smooth upgrade by checking with the manufacturers of any non-Apple software you use to make sure it is compatible with Mac OS 8.5. If you do experience a problem, see the troubleshooting chapter in your installation manual for information on isolating compatibility problems.

Compatibility information

•Installing Mac OS 8.5 on computers with Ultra Wide SCSI cards

Some older Ultra Wide SCSI cards require a firmware update before they will work with Mac OS 8.5. If the card's firmware is not compatible, your computer will crash during installation or when you start up from the CD. Before installing Mac OS 8.5, contact the manufacturer of your Ultra SCSI card to determine if a firmware update is necessary.

•Internet Setup Assistant and LAN connections

If you connect to the Internet through a local area network, select the “add a new Internet configuration”option when you use the Internet Setup Assistant. Selecting the option to modify the default configuration will not correctly configure your TCP/IP settings.

•Third-party Finder and utility software

Some third-party programs that extend or add features to the Mac OS may be incompatible with Mac OS 8.5. Examples include programs that change the way menus work, change how files are stored, or alter the way you work with files in the Finder. Contact the software's manufacturer for information about using such programs with Mac OS 8.5. This is especially important if you're using a program that automatically alters the way files are stored (such as compressing them) because you might not be able to access those files until you obtain updated software for use with Mac OS 8.5.

•Computers with DOS Compatibility cards

Apple DOS Compatibility cards do not work with Mac OS 8.5. After you install the software, you will no longer be able to use your DOS Compatibility Card to run DOS or Windows software.

•Computers with PowerPC processor upgrade cards

You cannot use Mac OS 8.5 on a computer with a 680x0 processor that has been upgraded with a PowerPC processor upgrade card.

•400K floppy disks and Mac OS 8.5

The 400K MFS disk format is not supported by Mac OS 8.5. If you have information or programs on 400K disks that you want to access, copy the files to your hard disk, an 800K floppy disk, or a 1.44MB floppy disk before installing Mac OS 8.5.

•PowerTalk and Mac OS 8.5

PowerTalk is not compatible with Mac OS 8.5. After you install Mac OS 8.5, you won’t be able to access your PowerTalk mail or catalogs, nor will you be able to use your PowerTalk keychain or other services.

•QuickDraw GX and Mac OS 8.5

Application programs that use QuickDraw GX may not be able to print due to changes in the version of QuickDraw GX included with Mac OS 8.5. See the file About QuickDraw GX on the CD for more information.

•MacODBC and Mac OS 8.5

If you use MacODBC, you should either install it before installing Mac OS 8.5, or perform a custom install of MacODBC and make sure the ASLM extensions are not selected. The MacODBC installer installs older versions of ASLM extensions that are incompatible with Mac OS 8.5.

•Installing Mac OS 8.5 on accelerated NuBus PowerPC computers

If you have a Power Macintosh 6100, 7100, 8100, or 9150 with a third-party accelerator that increases the clock speed of your computer, the Installer might refuse to install Mac OS 8.5 because it doesn't recognize your system. Contact the accelerator's manufacturer for help.

•Performa or Power Macintosh 5000 and 6000 series computers

Some Performa or Power Macintosh 5200 series, 5300 series, 6200 series, and 6300 series models cannot use Mac OS 8.5 until a hardware problem is fixed. The repairs are covered under the Apple repair extension program. To see if your computer has this hardware problem, use the 5xxx/6xxx Tester utility in the Utilities folder on the CD before installation.

IMPORTANT The Power Macintosh or Performa 5260, 6320, and 6360 do not have this hardware problem and do not need to use the tester program.

Troubleshooting suggestions

Some Apple-branded disks manufactured by third parties, including the Apple 365 MB external hard disk, are not supported by the Apple disk utilities. If your disk cannot be updated with the Apple utilities, you’ll need to use a third-party disk utility to update the driver.

If you see a message that your disk has problems and cannot be repaired, make sure file sharing is off, then try installing again. If that doesn’t work, try using another disk-repair utility. If you don’t have another utility, or if that utility also doesn’t work, you may need to reinitialize the disk. Copy all your files to another disk first, as reinitializing erases the disk. For more information about reinitializing, see the manual that came with your computer.

If you experience problems during installation, be sure to start up with the Mac OS CD. See your installation manual for instructions.

If you’re installing over a network, or if you have a non-Apple CD-ROM drive and can’t start up with the CD, turn off all extensions that weren’t provided with your system software. Then restart the computer. See your installation manual for instructions.

Additional troubleshooting information is available in the installation manual.

©1998 Apple Computer, Inc. All rights reserved.

Apple, the Apple logo, AppleShare, Macintosh, Mac OS, Performa, PowerBook, Power Macintosh, PowerTalk and QuickDraw are trademarks of Apple Computer, Inc., registered in the U.S. and other countries. Finder is a trademark of Apple Computer, Inc. PowerPC is a registered trademark of International Business Machines Corporation, used under license therefrom.

Updated August 17, 1998

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