I have iMac Rev.B (Bondi blue), with 8.6 installed. I upgraded to 8.6 (from 8.5.1 with firmware and iMac Updates).
When I want to start up from Norton Utilities 4.0 CD ROM, the machine keeps on displaying the MacOS 8.6 startup pict and hangs before extensions/control panels are loaded (yes, even with the 'c' keyboard shortcut or NU 4 as startup disk).
HElp !!! How can I boot from the NU4 CD ROM