To use nvflash on the MP to flash my 8800GT I did the following:
1) Download the fdfullcd.iso from freedos.org - burn the ISO image to a CD.
2) While in OSX put the CD into the MP then do a restart. After your screen goes blank, press and hold the 'option' key while the MP reboots. You will get a screen that gives you options on what to boot from, you should have at least two and possibly three options. Pick the icon that looks like a CD and is likely labelled "Windows". Click the up arrow underneath the icon.
3) FreeDOS will boot and give you a splash screen with some options, choose 1 (Continue to boot FreeDOS)
4) There will be a bunch of text followed by another set of options, choose 3 (boot DOS with Himem etc.) NOTE: to select option 3, hit the number 3 key on the keyboard, do not attempt to use the arrow keys to scroll the selection up and down. No need to hit enter, immediately after entering 3 the system will continue to boot. You will see error messages regarding the CDROM drive, these can be ignored.
5) You will be left at a DOS prompt on A:, which I presume is a ram disk.
At this point you need access to the nvflash program and possibly some read/write disk area if you wish to save a copy of your existing flash image.
I have bootcamp installed and FreeDOS recognized this partition and mounted it R/W for me as drive C: - problem solved! I used OSX to move nvflash and the previously posted MP8800 image files to the root of my BOOTCAMP drive, then booted FreeDOS to save my original flash and re-flash with the mac image. Instructions provided in previous posts to this thread on how to use nvflash to check the size of your flash and perform the actual image update.
If you don't have bootcamp installed you could try two options, use the bootcamp assistant to install bootcamp to the part where it wants the Windows CD and then quit. At that point you should have a DOS formatted partition on your hard drive that FreeDOS will see and use. Proceed as above. I saw one post somewhere that said it was necessary to have the Windows installer format the bootcamp C: drive before it was useable. If this is true, then it may require that you use FreeDOS to format that partition before it can be used. Make sure you format the correct piece of diskWhen complete you can use the bootcamp assistant again to remove the DOS partition.
Second option would be to see if you could slipstream nvflash (and MP8800 image) into the FreeDOS image before burning to CD. Not sure on specific instructions on how to do this, having never needed to do it myself. This would allow you to flash a card, but not make a backup of the original image. Not recommended unless you're sure it will work. Could be used to test a card to check it's flash size in either a MP or PC.
Well I injected the NVFLASH program into the ISO. But since FreeDOS cannot see the cd ... I can't load the NVFLASH EXE.
Also you can run 2 cards in the MP the ATI which the MAC see's and the 8800 which will boot into windows. Unfortunatly when booting into the Mac side of things the 8800 fan is going at Full tilt. Also my PNY card's color is Blue the laminated part... the Actual Board is green but its Blue for the most part.
I'm going to have to wait until I have access to a real pc with a boot disk.
I dont want to format my NTFS partition just to find out I have the wrong card.
