If you are installing the Power Macintosh Upgrade Card into a Macintosh that already has System 7.5 installed, you need to update the system software to have resources required to run in '601' mode.
Follow these steps:
Step 1:
Perform a custom install of System 7.5 by running the installer, choosing Custom Install from the pop-up menu, and installing only the Power Macintosh Card control panel.
Step 2:
Quit the installer and use the installed control panel to turn ON the Power Macintosh Upgrade Card.
Step 3:
Shut Down the computer. This is always necessary when turning the card on or off.
Step 4:
Startup with the Disk Tools disk if using the CD version of System 7.5; otherwise, startup with the Install 1 disk of System 7.5.
Step 5:
Run the Install program off the CD or the Install 1 disk and perform an Easy Install over the existing system on the hard drive used as the startup disk.
Step 6:
If necessary, also reinstall QuickDraw GX and PowerTalk. It is required that the upgrade card be turned ON when installing GX so the native version is installed.
At this point, your system should be operational in either 601 or 68040 processor mode. The System 7.5 Easy Install only installs resources necessary to run on the Macintosh it is installed on UNLESS a custom install was performed with the choice "System Software for any Macintosh". Following the above steps adds the necessary resources because the installer sees that an upgrade card is installed.
Article Change History:
27 Feb 1995 - Revised title slightly.
14 Feb 1995 - Updated keyword; reviewed for technical accuracy.
16 Dec 1994 - Clarified instruction step number 4.
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