AtaControl Woes - Please Help :(

Paul Civati paul at
Thu Jan 22 22:46:18 GMT 2004

"Brian Platt" <brianplatt at> wrote:

> I rebuilt my machine from 4.4 to 4.9 because i wanted to make use of the 
> RAID1 feature of atacontrol.
> atacontrol create RAID1 ad0 ad2
> This all woked ok and it showed drives ready etc and it created ar0 however 
> when i rebooted the machine it askes for the boot device i tried 
> ufs:/dev/ar0s1a but the machine just 'Panicked' and rebooted saying 
> something about mangled disks. Have i left some config out? do i now have to 
> rebuild my machine?

As far as I have experienced, the RAID functionality in the ata driver
relies upon the hardware support.  When I have set up the RAID devices
it has all been from within the BIOS of the RAID controller, and when
FreeBSD boots it sees the RAID device as ar0.


Paul Civati <paul.civati(at)>
Xensia, London UK - Quality UK Hosting Services - 0870 321 2855

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