From owner-freebsd-hackers Fri Sep 14 11: 3: 9 2001 Delivered-To: freebsd-hackers@freebsd.org Received: from mail.speakeasy.net (mail12.speakeasy.net [216.254.0.212]) by hub.freebsd.org (Postfix) with ESMTP id CD94337B40F for ; Fri, 14 Sep 2001 11:03:03 -0700 (PDT) Received: (qmail 38199 invoked from network); 14 Sep 2001 18:03:03 -0000 Received: from unknown (HELO laptop.baldwin.cx) ([64.81.54.73]) (envelope-sender ) by mail12.speakeasy.net (qmail-ldap-1.03) with SMTP for ; 14 Sep 2001 18:03:03 -0000 Message-ID: X-Mailer: XFMail 1.4.0 on FreeBSD X-Priority: 3 (Normal) Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 8bit MIME-Version: 1.0 In-Reply-To: <200109141650.f8EGoN501078@mass.dis.org> Date: Fri, 14 Sep 2001 11:02:57 -0700 (PDT) From: John Baldwin To: Mike Smith Subject: Re: Does boot1 still have a > 1023 cyl limit? Cc: freebsd-hackers@FreeBSD.org, rnordier@FreeBSD.org, Peter Pentchev Sender: owner-freebsd-hackers@FreeBSD.ORG Precedence: bulk List-ID: List-Archive: (Web Archive) List-Help: (List Instructions) List-Subscribe: List-Unsubscribe: X-Loop: FreeBSD.ORG On 14-Sep-01 Mike Smith wrote: >> A quote from the end of the boot_i386.8 manual page.. >> >> IMPORTANT NOTE: Because of limitations imposed by the conventional disk >> interface provided by the BIOS, all boot-related files and structures >> (including the kernel) that need to be accessed during the boot phase >> must reside on the disk at or below cylinder 1023 (as the BIOS under- >> stands the geometry). When a ``Disk error 0x1'' is reported by the sec- >> ond-stage bootstrap, it generally means that this requirement has not >> been adhered to. >> >> Just today I had a friend ask me if this is still true; I checked CVS >> history and found out that this comment was added by rnordier more than >> two years ago. Is this still true? > > No; it's quite possible now to boot from beyond the 1024 cylinder mark, > however boot0 does not install in 'packet' mode by default, which means > that you need to manually install/configure it before rebooting after > system installation. > > So we don't cleanly install for > 1024 cylinders, but it works with a > little tweaking. Actually, sysinstall has a hack to turn on EDD (aka packet mode) support if the drive has > 1024 cylinders. -- John Baldwin -- http://www.FreeBSD.org/~jhb/ PGP Key: http://www.baldwin.cx/~john/pgpkey.asc "Power Users Use the Power to Serve!" - http://www.FreeBSD.org/ To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-hackers" in the body of the message