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To: "Franco Vitali" <francovitali@gmail.com>
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From: Lowell Gilbert <freebsd-questions-local@be-well.ilk.org>
Date: Mon, 07 May 2007 11:37:24 -0400
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Cc: freebsd-questions@freebsd.org
Subject: Re: mountroot
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"Franco Vitali" <francovitali@gmail.com> writes:

> I'm using some old Pentium PCs, to install and test FreeBSD 6.2
>
>  
>
> Te problem I have is when I move the HD containing the OS to another
> machine, I'm prompted to specify the root partition.
>
>  
>
> I've checked the /etc/fstab file and everything is ok.
>
>  
>
> I modified /boot/loader.conf with:
>
> rootdev="ad0s1a" and "/dev/ad0s1a" (the same in /etc/fstab)
>
>  
>
> But I keep prompted to mount the root manually when the OS boots:
>
>  
>
> Mounroot> ufs:ad0s1a
>
>  
>
> What can I do? The only solution I can think is to reinstall the system in
> the new machine, but for other reasons I need to keep the installed OS.

There aren't any SCSI disks in this machine, are there?  That can
complicate things a bit.

Have you tried setting root_disk_unit?