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IOCTL_ATA_PASS_THROUGH_DIRECT RRS feed

  • Question

  • Hi,

    With regards to the above in reading a drive

    In the case of IOCTL_ATA_PASS_THROUGH_DIRECT

    and a simple read sector (0x20), how is the CurrentTaskFile[5] (bDriveHeadRegister) figured out?
    I see it is set to 0xE0 and it works but it also seems associated with big LBA etc. Is there any documentation that might point to this?

    Thanks,

    SS

    Wednesday, November 27, 2013 8:29 PM