Installing Mac OS 8.1

 Installing Mac OS 8.1 This document describes how to install Mac OS 8.1. It includes compatibility information, instructions for installing Mac OS 8.1, and basic installation troubleshooting. Updating your system using the downloaded Mac OS 8.1 Update image requires that you already have Mac OS 8.0 installed. If you are using the Mac OS 8.1 Reference CD, you may install onto Mac OS system versions 7.5 through 8.1. For more detailed information, see the Mac OS 8 installation manual. WARNING PowerTalk is not compatible with Mac OS 8.1. After you install any version of Mac OS 8, you won’t be able to access your PowerTalk mail or catalogs, nor will you be able to use your keychain or other PowerTalk services. See the Mac OS 8 installation manual for more information. WARNING 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. See the file About QuickDraw GX for more information. Before you install IMPORTANT In order to install Mac OS 8.1 on PowerPC machines with less than 16 MB of RAM, it will be necessary to reboot with extensions off (by holding the shift key until you see the Welcome to Mac OS message). IMPORTANT If Apple Remote Access 3.0 (ARA 3.0) Personal Server is installed, make sure answering is off before upgrading to System 8.1. To ensure answering is off in ARA 3.0, make sure the answering option is unchecked in the ARA Answering dialog. To get to the dialog, open the Remote Access control panel and select Answering… from the Remote Access menu. After the 8.1 update installation has successfully completed, turn answering back on from the same dialog. NOTE: If you want to create and use a Mac OS Extended format volume, make sure that you read the file “About Mac OS Extended format.” • Turn off any security software that you may have installed on your computer. • Turn off any virus-protection 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. • If you have AppleShare software earlier than version 3.6.4, you should upgrade to version 3.6.4 or later before installing Mac OS 8.1 over a network. See the document in the AppleShare folder in the Utilities folder for instructions. • When doing a clean install, write down your current Internet settings, such as the IP address, subnet mask, name server, and so on from the TCP/IP, PPP and Modem control panels. After installation, the Internet Setup Assistant will ask you to enter this information. IMPORTANT Apple recommends that you make a Disk Tools floppy disk, if you have downloaded the Mac OS 8.1 Update from the Apple Internet website, make sure that you also download the Disk Tools for PPC disk image. For all Mac OS compatible computers with a 68040 processor, except the PowerBook 190, use the "Disk Tools 1" disk. If you have a Mac OS 8.1 CD-ROM disc, you will find thi…