Re: WD_QUIRK_FORCE_LBA48

[Michael van Elst <mlelstv%serpens.de@localhost>]

On Tue, Dec 15, 2009 at 12:13:02PM +0100, Manuel Bouyer wrote:

> Err, my version of ATA6 (T13/1410D revision 1) has the same wording
> as ATA5. It looks like this was changed between revision 1 and
> revision 3.

Says much about how well device will conform to such a specification.


> > So the wording
> > in ATA6 regarding "one greater than the total number" is bogus
> > and probably not implemented correctly by some devices.
> 
> I don't understand why you says this is bogus. As the first adressable
> sector is 0, the total number of adressable sectors is the last 
> LBA28-adressable sector + 1.

See here:

> > 1) Words (61:60) shall contain the value one greater than the total
> >    number of user-addressable sectors in 28-bit addressing and shall


it says 'one greater than the number of sectors' (==count+1), and not
'one greater than the last sector' (==count).



Greetings,
-- 
                                Michael van Elst
Internet: mlelstv%serpens.de@localhost
                                "A potential Snark may lurk in every tree."