|The 137GB limit is really 128GB.|
EDIT: I wiped out what I'd written earlier & I'm replacing it with the following link. Basically, if you install a large HDD on a non 48-bit LBA system, you can create one 128GB partition & use the drive. But you can NOT use the rest of the drive space. Any data stored beyond the 1st 128GB will become corrupted. That's why a 120GB HDD is usually recommended. Either that or buy a controller card.