Windows 10: Missing HDD in BIOS and Disk Manager

  1.    30 May 2018 #1

    Missing HDD in BIOS and Disk Manager

    I recently started having issues with Windows 7 and decided to upgrade the system in stages.

    I was running the following:
    C: Main WD 1TB Caviar Black (Windows 7 and most software)
    D: Photos (WD 500MB Caviar Blue)
    E: DVD
    G: Simulator software (WD 1TB WD Caviar Black)

    and all was well with the world (apart from the aforementioned Windows 7 issues).

    I then installed an M.2 Samsung 500GB SSD on my Gigabyte Z97X-UD5H motherboard, and immediately installed Windows 10 on it. So I effectively had a dual boot system so I could work as normal for now on the Windows 7 drive and when time allowed, boot to the M.2 and start installing my required software.

    The problem is that is as soon as I rebooted after the Windows 10 installation, I found that the D: drive (Photos) was not appearing in My Computer or the Device Manager etc. I booted it to the Windows 7 drive, and again, the D: drive was now not visible. i.e. I seem to have lost contact with the D: HDD following the M.2/Windows 10 installation.

    I entered BIOS and even there I cannot see the old D: photo drive (and checked the SATA ports were enabled).

    Iíve changed the HDD positions and cables and all the other drives work fine, but no sign of the old D: drive no matter which cable or slot I use. I took the D: drive out and checked it on another computer using a SATA to USB tray - and it works fine with all the data intact. (I do have other external backups as well, just in case.)

    Any ideas why I canít get my D: drive to be seen again?!

      My ComputerSystem Spec

  2.    30 May 2018 #2

    If all else fails, read the manual

    "M.2, SATA Express, and SATA3 4/5 connectors can only be used one at a time. The SATA3 4/5
    connectors will become unavailable when an M.2 SSD is installed."
      My ComputerSystem Spec

  3.    30 May 2018 #3

    Aahh - there's a manual is there?!

    That's a nuisance. I guess I don't use that extra drive often and will just put in my USB/SATA cradle.

    Do you know if this is a peculiarity of the Z97X-UD5H, or do other MoBo's behave the same way?

      My ComputerSystem Spec

  4.    31 May 2018 #4
    page 29

    TooMuchFS said: View Post
    Do you know if this is a peculiarity of the Z97X-UD5H, or do other MoBo's behave the same way?

    Not sure, I have older board without M.2 port. It depends on number of PCI Express lanes - some may be shared.

    You still have four usable SATA ports although two are blocked; if it is not enough, you can buy & install some cheap 2 port or 4 port PCI Express SATA or M.2 controller card. For example:
    AXAGON PCES-SA4 - Expansion Card |
    I-TEC PCI-E 2x M.2 Card (PCI-E/SATA) - Expansion Card |
    Last edited by muchomurka; 31 May 2018 at 01:27.
      My ComputerSystem Spec

  5.    31 May 2018 #5

    This is expected behavior for Intel chipsets. Some SATA ports, PCIe lanes, and USB3 ports share PCH resources so you can only use one at a time.

    For 9-series chipsets like yours:
    Click image for larger version. 

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      My ComputerSystem Spec

  6.    31 May 2018 #6

    PolarNettles: Thanks for the clarification.
      My ComputerSystem Spec


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