Hi,

On 1 Jul 2008, at 13:48, Jeremy Chadwick wrote:

Footnote: I hope technical someone can expand on what the IDNF bit does
in read/write 48-bit ATA requests, however -- the ATA-7 specification
seems to imply it only gets set when an invalid LBA is submit to the
disk, which would imply a FreeBSD problem, and may explain everything.

It can also get set when the drive electronics is out to lunch and thinks a valid LBA is invalid FSR. I've just had a drive doing that.

--
Bob Bishop          +44 (0)118 940 1243
[EMAIL PROTECTED] fax +44 (0)118 940 1295




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