On 28 Dec 2005, at 14:56, Kevin Clark wrote:
I've just bought a used iMac G4/800 with 17" widescreen LCD, and,
according
to System Profiler, the inbuilt graphics are "NVIDEA GeForce4 MX".
In OS
9.2.2, if I load all the NVIDEA extensions the Mac hangs at the
startup
screen on bootup, but it boots OK with the ATI drivers loaded
instead. My
question is exactly which, if any, of the below extensions should I
have
loaded for optimum performance on this iMac?
Might be worth trawling Apple's Knowledge Base for updated OS 9.2.2
NVIDIA drivers. The iMac G4/800 (both flavours) was one of the very
last Macs to support OS 9, so it post dates 9.2.2 by a way, might be
that 9.2.2's default NVIDIA drivers don't support the iMac's video
chipset. Chances are when you load the ATi drivers they fail and are
ignored - hence why it works. That assumes you used the generic 9.2.2
install CDs, not the ones included with the iMac. If you used the
iMac's own install CDs then it's a bit more baffling but not totally
unlikely - maybe Apple got lazy and never bothered to update them or
something...
Re: startup keys, if OS 9 and OS X are on the same partition is could
potentially confuse the Open Firmware boot selector. If you are
booting into OS 9 by default then it's likely it can only see the OS
9 folder. OS 9 and )S X use totally different bootloaders so there is
room for confusion.
If you want to kill extensions in OS 9 wait until the Happy Mac
appears then hold shift. It's a swine to do on newer machines 'cause
the Happy Mac doesn't stay up for very long.
--
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