On Tue, Dec 2, 2008 at 5:50 AM, Alan Cox <alan@xxxxxxxxxxxxxxxxxxx> wrote: >> A small update to this. It seems the above mentioned interrupt fails >> somewhere around the 128GB boundary. Interrupt 13h, AH=42 uses a 64 >> bit sector address and should be capable of addressing the entire >> drive. For a SATA controller, this limitation seems relatively >> arbitrary. For IDE controllers, a limitation such as this is >> apparently common. > > 137GB I would imagine. That is the point at which LBA48 commands must be > used not LBA28 and presumably their BIOS code only supports old format > commands > Right, with LBA28 addressing you get 2^28 sector addresses = 2^27 KiB = 2^17 MiB = 2^7 GiB = 128 GiB which is approximately 137GB. When I wrote 128GB I really meant 128 GiB. Regards, David Ellingsworth P.S. I hate the "new" binary size notations they only cause confusion. -- To unsubscribe from this list: send the line "unsubscribe linux-ide" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
