Re: WD_QUIRK_FORCE_LBA48

[Manuel Bouyer <bouyer%antioche.eu.org@localhost>]

On Sat, Dec 05, 2009 at 04:27:56PM -0500, der Mouse wrote:
> >> But, really, it's not clear to me that it's worth doing non-LBA48
> >> transfers at all on drives capable of LBA48 [...]
> > the problem is not drives, the problem is controllers.  Some IDE
> > controllers don't support LBA48, but I don't have a list of those.
> > The only way to know is to try ...
> 
> What behaviour do they produce at present when connected to a drive
> >128G?  Wraparound at the 128G point?  Errors past there?

probably controller-dependant.  But they're useable up to 128G.

> 
> I would not suggest doing this unless (a) the drive claims to be
> LBA48-capable and (b) the drive claims to be at least 0x10000000
> sectors long.

Make that 0x10000001. 128Gb drives don't need LBA48 to access the last
sector. But then you'd break actually-working setups.

-- 
Manuel Bouyer <bouyer%antioche.eu.org@localhost>
     NetBSD: 26 ans d'experience feront toujours la difference
--