Date: Tue, 13 Nov 2012 07:40:31 -0700 (MST) From: Warren Block <wblock@wonkity.com> To: "Ronald F. Guilmette" <rfg@tristatelogic.com> Cc: freebsd-questions@freebsd.org Subject: Re: Advanced Format Drive ? Message-ID: <alpine.BSF.2.00.1211130735240.43524@wonkity.com> In-Reply-To: <86166.1352787251@tristatelogic.com> References: <86166.1352787251@tristatelogic.com>
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On Mon, 12 Nov 2012, Ronald F. Guilmette wrote: > > In message <20121113065602.ee2310d7.freebsd@edvax.de>, > Polytropon <freebsd@edvax.de> wrote: > >> On Mon, 12 Nov 2012 21:47:40 -0800, Ronald F. Guilmette wrote: >>> Is there _anything_ that I will have to do differently than I did for the >>> last 20 drives I've used with FreeBSD over the last 10+ years? >> >> As far as I know, the "old ways" still work as intended. >> I've been initalizing 1 TB and 1.5 TB disks the "old way", >> using sysinstall (to create a slice, then to create the >> partitions) and newfs (to format the 2nd data disk). So >> far, the disks are working for some years without trouble. >> Those are "normal" disks, not SSDs, purchased few years >> ago. >> >> The term "advanced format" is usually used for 4k-sectorized >> disks (in difference to "traditional" 512k sectors). >> >> You can find more here: >> http://en.wikipedia.org/wiki/Advanced_Format >> >> The implication for FreeBSD is (and has been for some time) >> to align partitions "at a 4k border". If you create partition >> sizes as multiples of 4k, it should be fine. > > Thank you. > > Which "partitions" need to be aligned to the 4KB boundaries? > The FreeBSD ones, the MBR ones, or both? The ones you want to be fast instead of half-speed. The easy way to do it is to jettison the old MBR slice/partition stuff and use the simpler GPT. The first half of this document shows how to set it up: http://www.wonkity.com/~wblock/docs/html/disksetup.html
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