Do we still need ATA disk CHS addressing?

Julian H. Stacey jhs at
Mon Aug 10 18:52:44 UTC 2009

> From:		=?utf-8?Q?Dag-Erling_Sm=C3=B8rgrav?= <des at> 
=?utf-8?Q?Dag-Erling_Sm=C3=B8rgrav?= wrote:
> "Julian H. Stacey" <jhs at> writes:
> > Alexander Motin <mav at> writes:
> > > Have anybody seen ATA drive without LBA support in last years?
> > Yes
> Have you really, or did you just assume that "old" means "no LBA"?

Yes, I just assumed.

> CHS doesn't scale past
> 504 MB, so any ATA disk larger than that must peforce support LBA.  

Ah! If so, then no problem here, Thanks Dag-Erling :-)

Alexander Motin wrote:

> `atacontrol cap adX` can show you if LBA is supported.

Thanks Alexander,  I will check that tomorrow on every host I have.

Julian Stacey: BSD Unix Linux C Sys Eng Consultants Munich
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