Date: Wed, 5 Nov 1997 15:30:02 -0800 (PST) From: j@uriah.heep.sax.de (J Wunsch) To: freebsd-bugs Subject: Re: i386/4948: SCSI don't boot. Message-ID: <199711052330.PAA18225@hub.freebsd.org>
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The following reply was made to PR i386/4948; it has been noted by GNATS. From: j@uriah.heep.sax.de (J Wunsch) To: dgilbert@strike.velocet.ca Cc: FreeBSD-gnats-submit@FreeBSD.ORG Subject: Re: i386/4948: SCSI don't boot. Date: Wed, 5 Nov 1997 23:56:23 +0100 As David Gilbert wrote: > After install of system, the boot manager comes up with the 'F1' > type menu to select the boot. Pressing F1 repeats the menu with the > default now not 'F1'. Repeated pressings produce no results. Sounds like the classic geometry mismatch problem. If this is an ``all FreeBSD'' installation, just try dangerously dedicated mode (which won't you allow to install a boot selector at all, of course). If this is an installation where FreeBSD shares disks with other systems, use the valid BIOS geometry. For the 1542, this is 32 sectors per track, and 64 heads, and X cylinders (where `X' is the number of Megabytes of your disk, rounded down to a full MB boundary) in normal mode. I think it's 255 * 64 for ``DOS mode > 1 GB''. I eventually forgot about the values the NCR BIOS is using -- all my disks are running in dangerously dedicated mode so i can shuffle them around between various controllers without hassles. -- cheers, J"org joerg_wunsch@uriah.heep.sax.de -- http://www.sax.de/~joerg/ -- NIC: JW11-RIPE Never trust an operating system you don't have sources for. ;-)
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