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Sending ATA command by DMA method?

CJ Kao
2008-09-11
2013-04-27
  • CJ Kao
    CJ Kao
    2008-09-11

    Dear all,
    I would like to test my HDD(read - write -compare) .
    For now, current version still uses "ATA_OP_READ_PIO(_EXT)" and it's slow.
    If I use "ATA_OP_READ_DMA" instead of "ATA_OP_READ", it will hang up.
    I though it must to do something to solve but I have no idea now.

    Is it possible to send command using ATA_OP_READ_DMA?

    Sorry my poor english.

    Cheers.

     
    • Frank Maloney
      Frank Maloney
      2008-09-11

      Although it may be nice to have, I think it may fall outside the scope of this tool. As I understand it, hdparm is for adjusting the various configurable parameters on a HDD and not for data transfer; however, there are the -t -T options.
      To do what you want to do you can use dd and md5sum or any other compare utility.

      cheers,
      Frank