Date: Fri, 17 Sep 2010 14:57:38 +0200 From: Michael Sperber <sperber@deinprogramm.de> To: freebsd-stable@FreeBSD.ORG Subject: Re: How to predict drive number change for 7.3->8.1 upgrade? Message-ID: <y9lr5gs7cjh.fsf@deinprogramm.de> In-Reply-To: <201009171238.o8HCcwCl084727@lurza.secnetix.de> (Oliver Fromme's message of "Fri, 17 Sep 2010 14:38:58 %2B0200 (CEST)") References: <201009171238.o8HCcwCl084727@lurza.secnetix.de>
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Oliver Fromme <olli@lurza.secnetix.de> writes: > Michael Sperber <sperber@deinprogramm.de> wrote: > > I just upgraded my desktop system from 7.3 to 8.1, and the main hard > > drive, which was /dev/ad6 before is now /dev/ad10. Consequently, the > > initial boot failed when trying to mount the root file system from ad6. > > > > The desktop system is now fixed, but I also have a rented server with > > only a serial console, and I worry that the upgrade is going to leave me > > with a dead machine. Is there any way to predict how the drive number > > changes? (Why does it change at all?) If so, what's the proper way to > > tell the system the initial root device *before* rebooting? > > Remove "options ATA_STATIC_ID" from your kernel config > before building the new kernel and rebooting. Then your > first disk will be ad0, no matter what controller and > channel it is connected to. Be sure to update your > /etc/fstab file. Ah, excellent - that's what I was looking for. Thanks! -- Regards, Mike
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