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Date: Sun, 17 Apr 2011 23:05:40 +0400
From: Lystopad Olexandr <laa@laa.zp.ua>
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 Hello, Jeremy Chadwick!

> > What about ahci_load="YES" after freebsd install? Is it too late?
> 
> I don't recommend enabling ahci.ko after the OS has already been
> installed on an adX disk, simply because I believe the combination of
> GEOM+CAM+ahci may show different geometry details than GEOM+ata would.
> 
> Note: I said "I believe", not "I can confirm/validate".  I could be
> completely wrong.  Rather than find out ( :-) ) I tend to try and do
> things consistently from the very beginning.
> 
> So you can try it if you want, be my guest, report back.

Wow!
Remote boy install freebsd onto another hdd, but boot server from
old hdd with gmirror! In the loader prompt he write load ahci and
server boots ok!!! :-) I see adaX devices!

Thanks!

-- 
 Lystopad Olexandr