Hi there, regarding MAX HDD limits, The limits imposed by the Hard Disk Drive Interface The Hard Disk Drive in the first IBM PC/XT Computer had 306 Tracks (Cylinders), four (4) Heads reading four surfaces on two platters, and used 17 Sectors per track. 306 x 17 x 4 x 512 Bytes per Sector gave a capacity of 10,370 KBytes. However on the newer IDE Hard Disk Drive Interface, and the universal device interface, SCSI, do not need to know about the numbers of Heads and Cylinders, as they are designed quite differently. They are only concerned with the total number of Sectors on the Hard Disk Drive.