new hdd numeration after mainboard change
ilikefbsd at web.de
Thu Oct 16 09:25:36 PDT 2008
Thank you very much, of course it was the AHCI configuration in the
BIOS, luckily i can now switch between AHCI and compatibility mode when
using Windows(otherwise it will result in a bluescreen) ;-)
Josh Paetzel wrote:
> Jeremy Chadwick wrote:
> > On Mon, Oct 13, 2008 at 07:12:20PM +0200, ilikefbsd at web.de wrote:
> >> i run "FreeBSD 7.1-PRERELEASE" i had a change of the mainboard of my
> >> lenovo notebook t60. after reboot the harddisk which was before
> >> recognized as "ad0" is now "ad4". i cannot find any other devices, no
> >> ad0/ad1/ad2 in /dev. even in the dmesg only ad4
> > The T60 is a laptop. It only has one hard disk -- so I'm not sure why
> > you were seeing ad0, ad1, ad2 in the past. You shouldn't have been,
> > unless you had 3 hard disks hooked up somehow.
> > The bottom line here is this: absolutely *nothing* requires the device
> > numbering to start at zero. And this is definitely the case.
> >> does fbsd create a uniqe identifier for harddisks in combination with
> >> the motherboard or something like that? where can i dig further into
> >> that issue?
> > It's not really an "issue". Very likely your computer has toggled some
> > BIOS settings.
> > The T60 series has the ability to run the SATA ports in two modes: AHCI,
> > or Enhanced/Compatible. Chances are before the motherboard swap, yours
> > was running in the opposite mode that it is now.
> > I would highly recommend using the AHCI mode. It works quite well with
> > FreeBSD under Intel controllers. Turn AHCI on (if it's not already),
> > and do not mess with it.
> I can verify as a T60 owner, if you toggle the BIOS between AHCI and
> "Compatability" the hard drive will show up as either ad4 or ad0.
> It works fine in either mode with FreeBSD. Unless you are running
> another OS that doesn't have SATA support there's really no reason to
> use compatibility mode
freebsd-questions at freebsd.org mailing list
To unsubscribe, send any mail to "freebsd-questions-unsubscribe at freebsd.org"
More information about the freebsd-questions