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    SubjectRe: [PATCH] Bogus LBA48 drives
    Geert Uytterhoeven wrote:
    > On Wed, 31 Mar 2004, Jeff Garzik wrote:
    >>Andries Brouwer wrote:
    >>>Hmm. I read in my copy of ATA7:
    >>> 6.16.55 Words (103:100): Maximum user LBA for 48-bit Address feature set
    >>> Words (103:100) contain a value that is one greater than the maximum LBA
    >>> in user accessable space when the 48-bit Addressing feature set is supported.
    >>> The maximum value that shall be placed in this field is 0000FFFFFFFFFFFFh.
    >>> Support of these words is mandatory if the 48-bit Address feature set is supported.
    >>>Do you read differently?
    >>The errata is, one needs to check that field for zero, and use the other
    >>one if so...
    > Which is not sufficient for `my' drives, since I get disk errors if I just use
    > the other capacity field and don't disable LBA48 completely.
    > I'll check the ATA specs myself, if I find some time...

    If it's reporting the "48-bit feature set supported" but doesn't really
    support it, I'd vote for broken drive :) Maybe check for a firmware
    update on the manufacturer's web site?


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