Package: debian-installer Severity: important Recording this to the Debian BTS and sending to relevant parties, to make sure it is not forgotten.
----- Forwarded message from Tejun Heo <t...@kernel.org> ----- Date: Sat, 24 Jul 2010 11:58:42 +0200 From: Tejun Heo To: Jeff Garzik , Ben Collins, Linux-IDE, LKML Subject: support for drives larger than 2TiB Hello, I've been playing with a SATA 2.5T drive and things don't look too bad. All four controllers I've tested worked fine and the driver and kernel worked just fine. Even BIOSes don't seem too bad. At least the two boards I tested (both about three years old) didn't have much problem recognizing upto 2TiB and could access and boot fine although I'm fairly sure there will be BIOSes which would behave erratically. I also tested installing w/ openSUSE 11.3 and it worked fine. It automatically chose GPT and alignment and everything just worked (tm). I think the situation shouldn't be too different for any distro which uses up-to-date parted. The only problem is that everything which is necessary for booting needs to be located below 2TiB limit. Please note that this is much stricter restriction than the 128GiB limit we had due to LBA28. That limit was caused by BIOSes using LBA28 and vendors could and did update and be done with it in many cases. However, 2TiB limit is inherent in the BIOS programming interface and currently the only way to overcome it is using a completely different BIOS interface (EFI, that is). Vendors are not likely to introduce EFI for already released products although they're much more likely to release updates so that BIOSes can access upto 2TiB if they don't work already. We'll be stuck with 2TiB limit on much more configurations for longer period of time. So, distro installers need to try to locate everything needed for bootstrapping below 2TiB limit (ie. a dedicated boot partition below the limit). Drives > 2TiB aren't on the market yet but aren't too far away. Let's make sure things will be ready by the next distro release cycle. Thanks. -- tejun ----- End forwarded message ----- -- "One disk to rule them all, One disk to find them. One disk to bring them all and in the darkness grind them. In the Land of Redmond where the shadows lie." -- The Silicon Valley Tarot Henrique Holschuh -- To UNSUBSCRIBE, email to debian-boot-requ...@lists.debian.org with a subject of "unsubscribe". Trouble? Contact listmas...@lists.debian.org Archive: http://lists.debian.org/debian-boot
