On Mon, 30 Mar 2009 08:20:46 -0400, Tsu-Fan Cheng <tfch...@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, ... _______________________________________________ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to "freebsd-questions-unsubscr...@freebsd.org"
