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Weird hard drive issue

Discussion in 'Storage and Networking' started by milespower, Jul 18, 2012.

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  1. milespower TechSpot Member Posts: 40

    Hey.

    So, my computer was running really slow, like really really slow, even transfering files so I benchmarked my HD and realized my 120GB Seagate Barracuda 7200.7 has a Sequential Read Speed of 3.0 MB/s when it should be around the 50MB/S mark.

    What's wrong?
    milespower, Jul 18, 2012
    #1

  2. SNGX1275 TS Special Forces Posts: 11,893   +117

    Drive controller is in PIO mode rather than UDMA. Check/change this in device manager, its in the properties for your drive controller, one of those tabs. I'm not on a Windows machine now or I'd check - but you should be able to figure it out from this.
    SNGX1275, Jul 18, 2012
    #2

  3. milespower TechSpot Member Posts: 40

    it's on the BIOS though. Will do it next time I power up the PC.
    milespower, Jul 19, 2012
    #3

  4. milespower TechSpot Member Posts: 40

    well, tuning the BIOS settings didn't work. Meanwhile, I found that a) my board somehow doubled the controller (2x Primary IDE, 2x Secondary IDE and I don't have any expansion card) b) the windows has "DMA if available" activated but it doesn't get out of PIO.
    milespower, Jul 19, 2012
    #4

  5. milespower TechSpot Member Posts: 40

    Figured it out already. Uninstalling and letting Windows re-install the IDE primary channel driver worked. Apparently this is an obscure Windows function that after six consecutive DMA errors it starts "underclocking" from UDMA6 to PIO0
    milespower, Jul 19, 2012
    #5

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