Date: Wed, 10 Jan 2007 12:26:00 -0800 From: "Kevin Oberman" <oberman@es.net> To: "Chen Xu" <xuchen66@gmail.com> Cc: freebsd-stable@freebsd.org Subject: Re: booting question Message-ID: <20070110202600.4C20D45041@ptavv.es.net> In-Reply-To: Your message of "Wed, 10 Jan 2007 14:54:09 EST." <184b087c0701101154x4bf948e7k8f00d4f9e7e2a8d6@mail.gmail.com>
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--==_Exmh_1168460760_81704P Content-Type: text/plain; charset=us-ascii Content-Disposition: inline > Date: Wed, 10 Jan 2007 14:54:09 -0500 > From: "Chen Xu" <xuchen66@gmail.com> > > > Don't unload. Assuming that you use loader, let the system proceed to > > the count-down and press any key except <ENTER>. Then enter the command: > > boot kernel.old > > > > If you want to boot with options, place them at the end. (E.g. "boot > > kernel.old -s" > > that is very nice to know. I ran into the very same problem recently. > what I used to do was: at counting down, press SPACE bar, unload, > load /boot/kernel.old/kernel, boot. At least this order worked in the past. > Something must have changed at some point. This may or may not work depending on modules loaded (note that unload will unload all modules already loaded by the loader, not just the kernel) and whether any modules are loaded later in the boot process. While I have not check in quite a while, at one time this would result in modules still being loaded from /boot/kernel and these might not be compatible with the old kernel. It is quite possible that these issues have now been resolved and that both methods will produce identical results. -- R. Kevin Oberman, Network Engineer Energy Sciences Network (ESnet) Ernest O. Lawrence Berkeley National Laboratory (Berkeley Lab) E-mail: oberman@es.net Phone: +1 510 486-8634 Key fingerprint:059B 2DDF 031C 9BA3 14A4 EADA 927D EBB3 987B 3751 --==_Exmh_1168460760_81704P Content-Type: application/pgp-signature -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.6 (FreeBSD) Comment: Exmh version 2.5 06/03/2002 iD8DBQFFpUvYkn3rs5h7N1ERAuLwAKCRyQgJL1OzbOFjmEUNftNkZFv3yQCfe14q 3G0aaZuavA0k3V7xeU+mn/w= =m22Z -----END PGP SIGNATURE----- --==_Exmh_1168460760_81704P--
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