Thread
Using >128GB drives on older machines.
In response to a post, the link below I found seems to offer some utilities that will work well in breaking the limit. I haven't had any personal experience with it, but it seems legit, since it IS from OWC.
http://eshop.macsales.com/item/Intech%20USA/SPEEDHCCD/
http://eshop.macsales.com/item/Intech%20USA/SPEEDHCCD/
Thanks. I did have a feeling it wasn't an absolute limit in the ATA chipset. I am kind of sort of almost sure that some *nixen can see the full drive, and I picked up the impression somewhere that OS X could too. I probably got that mixed up with the slave drive thing in the rev1 beiges.