From owner-freebsd-questions Thu Apr 11 15:51:46 1996 Return-Path: owner-questions Received: (from root@localhost) by freefall.freebsd.org (8.7.3/8.7.3) id PAA20013 for questions-outgoing; Thu, 11 Apr 1996 15:51:46 -0700 (PDT) Received: from mail.think.com (Mail1.Think.COM [131.239.33.245]) by freefall.freebsd.org (8.7.3/8.7.3) with SMTP id PAA19957 for ; Thu, 11 Apr 1996 15:51:12 -0700 (PDT) Received: from Early-Bird-1.Think.COM by mail.think.com; Thu, 11 Apr 96 18:51:09 -0400 Received: from compound.think.com ([206.10.99.158]) by Early-Bird.Think.COM; Thu, 11 Apr 96 18:51:06 EDT Received: (from alk@localhost) by compound.think.com (8.7.5/8.6.112) id RAA02514; Thu, 11 Apr 1996 17:51:07 -0500 (CDT) Date: Thu, 11 Apr 1996 17:51:07 -0500 (CDT) Message-Id: <199604112251.RAA02514@compound.think.com> From: Tony Kimball To: questions@freebsd.org Subject: boot from sd1 Sender: owner-questions@freebsd.org X-Loop: FreeBSD.org Precedence: bulk When I try to boot from sd(1,a), one of three things will happen, depending upon circumstances which I do not entirely understand. 1) Boot to sd(0,a) The kernel will claim to have successfully changed the root device to sd(1,a), erroneously. The mount table will claim that root is sd(1,a), when in fact it contains the files of sd(0,a). 2) Failure to change root. Panic. Only a hard reset will recover. 3) BIOS infinite loop? Error: C0; H0; S0 Error: C0; H0; S0 Error: C0; H0; S0 Error: C0; H0; S0 ... I am using an HDA Taiwanese Triton P100 MB with a 1542CF. Primary IDE master is a Seagate 1GB PIO4. SCSI 0, 1 are each dissimilar 1GB SCSI-2 hard drives. There are other SCSI devices. I understand that there is a limitation in the bios prohibiting boot from more than two devices. If I remove the IDE drive, will that provide me with the ability to boot on sd1? Will some other tool, such as OS-BS, permit me to do so? I would be especially appreciative of a technical description of the failure modes, or a pointer to code or documentation which would be particularly illuminating. //alk