Date: Tue, 24 Feb 1998 15:22:42 -0800 (PST) From: Simon Shapiro <shimon@simon-shapiro.org> To: Mike Smith <mike@smith.net.au> Cc: Mark Blackman <tmb@rcru.rl.ac.uk>, freebsd-smp@FreeBSD.ORG Subject: Re: SMP success on W6-LI Message-ID: <XFMail.980224152242.shimon@simon-shapiro.org> In-Reply-To: <199802242305.PAA16863@dingo.cdrom.com>
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On 24-Feb-98 Mike Smith wrote: >> >> On 24-Feb-98 Mark Blackman wrote: >> >> ... >> >> > Forgot to mention that that the 4.06 Phoenix BIOS won't let me boot >> > FreeBSD from either the IDE or SCSI hard drive, so I'm compelled >> > to use the floppy just to get things kicked off. This Phoenix >> > BIOS boot problem has been alluded to in a couple of the >> > other mail messages on some of the other lists. It's an >> > annoyance but a tolerable one. >> >> Did you try to low-level format the drives? >> >> The cause is too sinister to verbalize. Try to swap drives beween >> machines >> too. Hint: BIOS-MBR-M$ > > The problem here is most likely actually a known bug in the Phoenix > BIOS core where they fail to correctly initialise the register which > holds the BIOS drive ID of the boot device. > > Because FreeBSD is one of the few operating systems that actually > supports booting any disk using the same bootblock, this causes some > problems. > > Especially when the value that is erroneously inserted is 0 (BIOS drive > ID for the floppy). This is another problem than what I was thinking about. I was thinking about where the BIOS declares (silently) the MBR to be R/O, and only boots Win95, unless you zap the MBR. ---------- Sincerely Yours, Simon Shapiro Shimon@Simon-Shapiro.ORG Voice: 503.799.2313 To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-smp" in the body of the message
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