Date: Mon, 30 Mar 2009 14:46:08 +0200 From: Polytropon <freebsd@edvax.de> To: Tsu-Fan Cheng <tfcheng@gmail.com> Cc: FreeBSD <freebsd-questions@freebsd.org> Subject: Re: init panic in freebsd 7.1 Message-ID: <20090330144608.3a5f121f.freebsd@edvax.de> In-Reply-To: <f84c38580903300520q9e7c5e1yfd06158e41522c8e@mail.gmail.com> References: <f84c38580903291123o30fde6aeg9ecd196e8184bb40@mail.gmail.com> <20090329204919.96ac0671.freebsd@edvax.de> <f84c38580903300520q9e7c5e1yfd06158e41522c8e@mail.gmail.com>
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On Mon, 30 Mar 2009 08:20:46 -0400, Tsu-Fan Cheng <tfcheng@gmail.com> wrote: > But while I was testing an > exact same mborad I got from ebay, I noticed that the replacing board > name my SATA differently from the old board, its designated as ad10 > and ad12 instead of ad4 and ad6. What is the mechanism that underlie > this?? thank you!! The numbering sceme depends on the controller and the amount of possible disks it allows to be attached, to be describable as "free controller slots", no matter if a disk is attached or not. Maybe your first mboard had ad0 - ad4 ATA, ad6 - ad8 SATA, and the new board has (a) more ATA connectors or (b) uses a different numbering for the internal and external SATA ports. If the hardware seems to look exactly the same, there can even be a difference in the BIOS configuration that causes different numbering. Note that this change of the device name usually requires changes in /etc/fstab, e. g. ad4 -> ad10 to make the system start on this hardware. -- Polytropon >From Magdeburg, Germany Happy FreeBSD user since 4.0 Andra moi ennepe, Mousa, ...
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