System 7: Workaround for 32-bit Incompatible Boards



Article Change History
----------------------
08/21/92 - REVIEWED
* For technical accuracy; edited.


If a computer is set to 32-bit mode under System 7 and has a 32-bit
incompatible board installed, you get an error chime at startup and a sad
Macintosh on the screen, or both. How do you fix the problem?


To fix this, do the following:

* Remove the incompatible board or boards.

* If you still have your video card installed (assuming it's not the
 incompatible card), start up from a 6.0.x floppy and you will get a
 dialog prompting you to change to 24-bit addressing.

 - OR -

* If you don't have your video card, start up from your System 7 and
 reset the Parameter RAM by holding down Command-Option-p-r at start up.

These procedures will reset the addressing to 24-bit mode.


Published Date: Feb 18, 2012