Classic Mac Hardware (Troubleshooting, Upgrading, & Modifying) > Mac OS 9 Booting on Previously Unsupported Hardware

Mac Os 9 booting on: G4 Tower MDD FW800 (Detailed Posts)

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Protools5LEGuy:
Is there out a method to "change" the "firmware" of a MDD FW800 to a OS9 bootable (First MDD) "bios"?
I did not find anyone that had made, but maybe one user has the 2 models and can say us: "the fw800 has a XXX chip for the bios and the Fw400 has YYY chip"  Maybe noone was brave enought to "desolder" the "OSX" controller and put a "OS9" compatible one.
There "should" be a method to "force flash" the bios  from the FW800 models to OS9, but in 6-7 years of research I did not find anything nor anyone.

But I just learned in the good way that this machines can still surprise us.

I readed somewhere that Lacie FW800 add-on cards work on OS9 as FW400.

Maybe the FW800 FW chipset is the only difference?

Protools5LEGuy:
In theory from open-firmware the user can say "dont use that resource".
This is the way for "unplug" onboard graphics cards on beige G3s for using pci ones.

There are too many FW800 machines out there and we want boot OS9 with them!

MacTron:
-No Fw800, No USB 2... but I had read long time ago that this is posible.

-Format an HD with Mac Os 9 drivers.
-Use a Mac Os ROM version 10.2
-Force the startup with this HD.
... I never tested this, but may help ...

Protools5LEGuy:

--- Quote from: MacTron on March 13, 2014, 04:42:32 PM ----No Fw800, No USB 2... but I had read long time ago that this is posible.

-Format an HD with Mac Os 9 drivers.
-Use a Mac Os ROM version 10.2
-Force the startup with this HD.
... I never tested this, but may help ...

--- End quote ---
I had never read that. If it is true, it should not matter what model of MDD to buy for OS9.
Pci usb2 cards work in OS9 as usb1
Pci Fw800 cards work in Os9 as fw400
I asume you mean you cant use onboard usb2.0 ports and fw800.

Syntho:
Let's wait until DieHard chimes in. I think he's an expert when it comes to this  -afro-

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