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Windows 7 not recognizing eSATA drive, but BIOS is

  • Windows 7
  • BIOS
Last response: in Windows 7
November 20, 2010 3:02:15 PM

I just got a new Gigabyte GA-P55A-UD4P motherboard, and I am trying to get Windows 7 64-bit to recognize an external hard drive connected to the eSATA ports.

I've set the the following BIOS options:

  • PCH SATA Control Mode to AHCI
  • HPET Mode to 64-bit
  • eSATA Controller Enabled
  • eSATA Ctrl Mode to AHCI
  • GSATA Controller Enabled
  • GSATA Ctrl Mode to AHCI

    When I first connected drive the motherboard, a tray icon said that I needed to install a driver to get the hard drive to be recognized. So I went to the device manager, and under other devices there was a device titled JMicron something (sadly, I don't remember exactly what it was titled). So I placed the driver disc in the optical driver, and I had the missing device search for the driver on the driver disc. The device manager found the driver, and new device came up as JMicron SATA something (again, I don't exactly remember what it was titled). So I restarted, then I powered on my external hard drive, but Windows still didn't recognize it. If I try turning on the external drive before I boot-up my system the drive still isn't being recognized by Windows.

    The drive does get recognized by the BIOS on start-up if I power on the external drive before I boot-up my system. So that tells me that the BIOS is detecting it correctly; and the problems is with Windows.

    So where do I go from here?
  • More about : windows recognizing esata drive bios

    a b $ Windows 7
    November 20, 2010 3:09:53 PM

    What exactly do you mean by "Windows didn't recognize it"? It doesn't appear in Disk Management?
    Related resources
    November 20, 2010 3:36:34 PM

    Check disk management-
    November 21, 2010 1:21:08 PM

    Ijack said:
    Try downloading the latest driver from and installing it.

    Major thanks ijack! I downloaded and installed the driver, restarted and everything worked perfectly!

    Thanks again! :-D