ad0 vanishes just before mount

[Søren Schmidt]

On 20/05/2005, at 21.01, raoul megelas wrote:

> Hello all,
>
> At work, ad0 is not detected, neither on 5.4, nor on current
> from 01/05/2005, or from 16/05/2005.
> (erased bin etc sbin usr/bin usr/sbin and lib and libexec and  
> rebuilt all
> on another machine; mounted the drive externally and reinstalled all).
>
> The kernel is properly loaded, but after that, the drive
> vanishes: no detection. We fall in the manual mount.
> of course no mount is possible on that drive.
>
> N.B. acd0 and acd1 are properly detected and working
> on the secondary channel.
>
> swapping the channels gives the same behaviour...
>
> The drive works quite well (another os on it).
>
> any idea would be welcome.

I cant help you without information on what kind of system you have,  
ie what chipset and what disks etc. The probe output from boot would  
be real helpful preferably from a verbose boot.

- Søren