Forums
New posts
Articles
Product Reviews
Policies
FAQ
Log in
Register
What's new
Search
Search
Search titles only
By:
New posts
Menu
Log in
Register
Install the app
Install
Forums
Apple Computing Products:
macOS - Desktop Hardware
Best way to upgrade Dual 500 G4
JavaScript is disabled. For a better experience, please enable JavaScript in your browser before proceeding.
You are using an out of date browser. It may not display this or other websites correctly.
You should upgrade or use an
alternative browser
.
Reply to thread
Message
<blockquote data-quote="Avalon" data-source="post: 44094" data-attributes="member: 5184"><p>I didn't know that. But what I know is that the OpenFirmware is not simply editable by entering it. It's in a FlashROM, like the BIOS on a PC. You can edit in fact the NVRAM via OpenFirmware, and do some other checks about the hardware.</p><p></p><p>I have one of those last G4 Powermacs that are OS9-bootable(MDD 2003, after the MDD FW800), and what's for sure is that it can only run stable with the OS9 delivered with it, on the system restore disk.</p><p>Because I tried to install an OS9 not delivered with a machine, the problem was that some of the hardware wasn't recognised and didn't work properly. I did some tweaking around by using some extensions of the original OS9, and managed to recognise most of the hardware, nevertheless, it never really worked properly.</p><p></p><p>If it is only an OpenFirmware setting, why did Apple sell those OS9 bootable MDDs, after the FW800 MDDs which were not OS9-bootable?? They could have simply changed the settings of the FW800, if it was that easy...</p><p>The last G4 Powermacs were nothing else than the same mainboards as the pre-FW800 modell, running at 167MHz. The FW800 has a different mainboard, that wasn't meant to be supported by OS9.</p></blockquote><p></p>
[QUOTE="Avalon, post: 44094, member: 5184"] I didn't know that. But what I know is that the OpenFirmware is not simply editable by entering it. It's in a FlashROM, like the BIOS on a PC. You can edit in fact the NVRAM via OpenFirmware, and do some other checks about the hardware. I have one of those last G4 Powermacs that are OS9-bootable(MDD 2003, after the MDD FW800), and what's for sure is that it can only run stable with the OS9 delivered with it, on the system restore disk. Because I tried to install an OS9 not delivered with a machine, the problem was that some of the hardware wasn't recognised and didn't work properly. I did some tweaking around by using some extensions of the original OS9, and managed to recognise most of the hardware, nevertheless, it never really worked properly. If it is only an OpenFirmware setting, why did Apple sell those OS9 bootable MDDs, after the FW800 MDDs which were not OS9-bootable?? They could have simply changed the settings of the FW800, if it was that easy... The last G4 Powermacs were nothing else than the same mainboards as the pre-FW800 modell, running at 167MHz. The FW800 has a different mainboard, that wasn't meant to be supported by OS9. [/QUOTE]
Verification
Post reply
Forums
Apple Computing Products:
macOS - Desktop Hardware
Best way to upgrade Dual 500 G4
Top