Caviar Green 3TB only shows 746GB?

[metalman]

I had the same problem, Intel has a program to fix their chipset, if  you don’t have one your out of luck, my chipset was Nvidia and I tried for a whole day updating the bios with Asus updates did not work made things worse, then finally I tried Nvidia updates and it work like a dream, so if you need to update your chipset go right the the chipset manufacturer for your update, hope this helps someone.