Seagate Hard Drive PIO DMA

Archived from groups: comp.sys.ibm.pc.hardware.storage (More info?)

my hard drive:
Primary:
Master Maxtor 20gb
Slave: DVD-R
Secondary:
Master: Seagate 80gb
Slave: DVD

my seagate 80gb is on PIO all the time. I’ve tried the method on the
windows site saying to go into device manager and then IDE/ATA then
keep going and choose DMA and then click OK then check, still didnt
work. then i tried the regist edit method where i deleted the
masteriddatachecksum and slaveiddadchecksum, didnt work. then i did
that and also edited timingmodeallowed to ffffffff, didnt work. then i
changed timingmode from 10 to 2010, didnt work. lastly i uninstalled
the drive from the IDE ATA/ATAPI in the device manager, it still didnt
work. can someone please help me?

btw, after the regist edit it was on dma for about an hr and then it
went back to PIO.

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3 answers Last reply
More about seagate hard drive
  1. Archived from groups: comp.sys.ibm.pc.hardware.storage (More info?)

    Look for atapi errors in Event Viewer. If there are, replace the cable (18").

    "subx0va" <UseLinkToEmail@HardwareForumz.com> wrote in message
    news:7_304870_0a6bf9325ef8757cfd3bc26c26734d88@hardwareforumz.com...

    > Secondary:
    > Master: Seagate 80gb
    > Slave: DVD
    >
    > my seagate 80gb is on PIO all the time. I’ve tried the method on the
    > windows site saying to go into device manager and then IDE/ATA then
    > keep going and choose DMA and then click OK then check, still didnt
    > work. then i tried the regist edit method where i deleted the
    > masteriddatachecksum and slaveiddadchecksum, didnt work. then i did
    > that and also edited timingmodeallowed to ffffffff, didnt work. then i
    > changed timingmode from 10 to 2010, didnt work. lastly i uninstalled
    > the drive from the IDE ATA/ATAPI in the device manager, it still didnt
    > work. can someone please help me?
    >
  2. Archived from groups: comp.sys.ibm.pc.hardware.storage (More info?)

    Previously subx0va <UseLinkToEmail@hardwareforumz.com> wrote:
    > my hard drive:
    > Primary:
    > Master Maxtor 20gb
    > Slave: DVD-R
    > Secondary:
    > Master: Seagate 80gb
    > Slave: DVD

    > my seagate 80gb is on PIO all the time. I’ve tried the method on the
    > windows site saying to go into device manager and then IDE/ATA then
    > keep going and choose DMA and then click OK then check, still didnt
    > work. then i tried the regist edit method where i deleted the
    > masteriddatachecksum and slaveiddadchecksum, didnt work. then i did
    > that and also edited timingmodeallowed to ffffffff, didnt work. then i
    > changed timingmode from 10 to 2010, didnt work. lastly i uninstalled
    > the drive from the IDE ATA/ATAPI in the device manager, it still didnt
    > work. can someone please help me?

    > btw, after the regist edit it was on dma for about an hr and then it
    > went back to PIO.

    Anything in the system log? The OS may downgrade a HDD to PIO
    if there are errors...

    Arno
  3. Archived from groups: comp.sys.ibm.pc.hardware.storage (More info?)

    subx0va <UseLinkToEmail@HardwareForumz.com> wrote:

    > my hard drive:
    > Primary:
    > Master Maxtor 20gb
    > Slave: DVD-R
    > Secondary:
    > Master: Seagate 80gb
    > Slave: DVD

    > my seagate 80gb is on PIO all the time. I’ve tried the method on the
    > windows site saying to go into device manager and then IDE/ATA then
    > keep going and choose DMA and then click OK then check, still didnt
    > work. then i tried the regist edit method where i deleted the
    > masteriddatachecksum and slaveiddadchecksum, didnt work. then i did
    > that and also edited timingmodeallowed to ffffffff, didnt work. then i
    > changed timingmode from 10 to 2010, didnt work. lastly i uninstalled
    > the drive from the IDE ATA/ATAPI in the device manager, it still didnt
    > work. can someone please help me?

    > btw, after the regist edit it was on dma for
    > about an hr and then it went back to PIO.

    That's the evidence that the OS is deciding that it isnt safe to
    run in DMA mode, usually due to errors seen with that drive.

    See if DMA will stick with the DVD temporarily unplugged.

    If that doesnt make any difference, try a new ribbon cable.

    If that doesnt help either, likely the controller is faulty.

    See what is in the error logs that is relevant.
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