AppleNForceATA 32 bits and more than 4gb ram bug fix

[darknkreepy3#]

the AppleNForceATA.kext is 32 bits from most of the osx86 community and some claim to be 64 bit compatible. Some strange bugs in this kext when in 32 bits when using high speed transfers with programs like Final Cut Pro 7 and just installing updates like the 10.6.7 or 10.6.8 combo update, large files above 1gb etc:

total kernel panic! unless you start with boot flag option:

Code: Select all

maxmem=4096

this will keep the registers from freaking out in the >4gb memory areas, as 32 bits goes to 4gb and that's it's scope. Try it, fixes all problems, except of course the waste of any additional ram you might have.

this boot flag has fixed the fcp7 freezing bug when scanning through a video clip on the timeline etc, and installing or moving large files (on either PATA or SATA) with a nvidia 460 2gb plait installed in pci-0 (first slot). So, it was not a fermi freeze at all.

I have found a TRUE 64 bit driver with zero freezes (related to the Nforce chipset) in the wild. Use this fix above or keep plugging away, there are so many 'versions' out there. Worse than windows driver bugs ever were. Apple sucks.