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Date:      Wed, 9 Jan 2002 18:53:00 +1030
From:      Greg Lehey <grog@FreeBSD.org>
To:        Brett Glass <brett@lariat.org>
Cc:        questions@freebsd.org
Subject:   Re: Moving the boot disk to another controller
Message-ID:  <20020109185300.D66190@wantadilla.lemis.com>
In-Reply-To: <200201090820.BAA16298@lariat.org>
References:  <200201090820.BAA16298@lariat.org>

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On Wednesday,  9 January 2002 at  1:20:32 -0700, Brett Glass wrote:
> I'm working on upgrading a server, and have encountered a frustrating problem.
> This server has dual IDE controllers on the motherboard, but they're slow --
> 33 MHz max. So, I bought an Promise PCI Ultra100 controller and plugged it
> into a PCI slot. I then took the boot drive and plugged it into the new
> controller. Once I did this and reconfigured the BIOS, the system would
> load the kernel and get partway through the boot sequence but then
> freeze up. From the messages on the screen, it appears that, even though it
> had properly loaded the kernel from the hard drive, it couldn't find its
> root filesystem later on in the boot sequence and so could not boot
> up.

Hmm, it shouldn't freeze.  It won't be able to remount / because the
name in /etc/fstab is wrong.

> I changed /etc/fstab before the shift so that the system would know
> that /dev/ad4s1a was to be root, etc.;

Ah.  That's what comes of reading sequentially.

> however, there are apparently other things to shift as well. What
> did I miss?

The messages?  If you fix /etc/fstab, it should work.

BTW, don't expect a big speed difference between UDMA33 and UDMA100.

Greg
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