query wrote: > I want to know enable 32-bit IO-support on my SATA hard drive > using hdparm . But before I enable 32-bit support , I want to know > whether my hard drive supports 32-bit IO or not. The term "32-bit I/O" relates to communication between the CPU and a PCI IDE controller. The concept isn't meaningful for an on-board controller. As for communication between the controller and the drive, a parallel ATA interface is 16-bit, while SATA is serial. > * 48-bit Address feature set > (is it telling that the disk supports 48-bit IO) No, it's stating that the drive supports 48-bit LBA addresses. The original IDE standard used 28-bit addresses which limit the size of the drive to 137GB (2^28 512-byte sectors). -- Glynn Clements <glynn@xxxxxxxxxxxxxxxxxx> -- To unsubscribe from this list: send the line "unsubscribe linux-admin" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
