From mboxrd@z Thu Jan 1 00:00:00 1970 From: Lars Marowsky-Bree Subject: Re: Driver for BIOS-based software RAIDs Date: Tue, 14 Oct 2003 09:18:50 +0200 Sender: linux-raid-owner@vger.kernel.org Message-ID: <20031014071850.GD1951@marowsky-bree.de> References: <200310131921.45824.thomas@horsten.com> <200310132025.30939.thomas@horsten.com> <20031013211722.GG23916@marowsky-bree.de> <200310132238.40012.thomas@horsten.com> Mime-Version: 1.0 Content-Type: text/plain; charset=iso-8859-1 Content-Transfer-Encoding: QUOTED-PRINTABLE Return-path: Content-Disposition: inline In-Reply-To: <200310132238.40012.thomas@horsten.com> To: Thomas Horsten , linux-raid@vger.kernel.org List-Id: linux-raid.ids On 2003-10-13T22:38:40, Thomas Horsten said: > Having said that, BIOS RAID does solve a few problems inherent to sof= tware=20 > RAID's, particularly the boot process The boot process is a real problem. It can be partly solved in the bootloader - iff the BIOS is smart enough to try all disks until it can read one copy -, but yes, BIOS RAID does have some advantage here. This is pre-kernel stage though and so beyond this driver anyway. After the kernel is up and running, we can handle that just fine. > and consistency of RAID's between operating systems. That's fortunately a problem I don't have to care about ;-) > > Windows doesn't use the BIOS to access the device at all; the > > corresponding hardware drivers emulate that. > I know, but the BIOS supports its boot up to 32-bit mode. Which means= you=20 > could see the drive from DOS, etc. Well, for the boot loader stage it does have some advantage as I said. But beyond that it doesn't matter and is bypassed. Sincerely, Lars Marowsky-Br=E9e --=20 High Availability & Clustering ever tried. ever failed. no matter. SuSE Labs try again. fail again. fail better. Research & Development, SUSE LINUX AG -- Samuel Beckett - To unsubscribe from this list: send the line "unsubscribe linux-raid" i= n the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html