Since you solved this eMac problem, can I erase an old MAC (Power Mac G4, OS 9.2.2) in the same way?
Am only owner, have both disks - System Restore & Software Install.
Tried starting from System Restore disk by holding down the C key when computer reboots, after hear chime and before anything comes up but it freezes.
So tried to do it after computer had started, opened CD (it's the correct one as under Apple Software Restore screen comes up with options to Retore, saving original, Restore in Place and Erase "Macintosh HD" before restoring.
Selected Erase below next to Volume Format which is defaulted at "Same as selected configuration" which is: in Configuration Window there's only one option "Power Mac 64 HD.img.
Underneath at Destination Disk Eject Disk is greyed out so only option is to Switch Disk.
Below that it only gives option to Quit, Restore is greyed out.
(Next to the Quit/Restore buttons, there's explanation window, which says: the disk "Macintosh HD" is the startup disk and cannot be restored. Please click Switch Disk/Switch Device to select another disk.)
I can't remember how to start it with Extensions Manager turned off, and don't know if that would help.
Was just planning to recycle the parts but had wanted to try to erase the drive if possible. thanks!