[t13] 04-136r0.pdf SCSI to ATA Command Translations

Jeff Garzik jgarzik at pobox.com
Fri Jun 11 18:08:26 PDT 2004


This message is from the T13 list server.


Eschmann, Michael K wrote:
> This message is from the T13 list server.
> 
> 
> In case you weren't aware, ATA 48-bit "extended" read and write supports
> 1 to 65536 sectors so the comment about it only supporting 256 sectors
> is incorrect.  TTFN, MKE.

>> > For lba28 devices,
>> > Linux limits you to 0xff (actually a tiny bit
>> > less) as expected.
>>
>>Linux lba28 max is xFE LBA's per CDB?
> 
> 
> ATA lba48 limits you to 256 sectors.
> 
> libata limits lba28 devices to 200 sectors, for various reasons.


Doh!  Thanks for noticing -- I clearly meant lba28 here, drawing a 
comparison between what ATA lba28 and libata lba28 maximums are.

	Jeff





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