UEFI Booting of GPT partition doesn't work after 2nd HDD was added


  1. PhilM
    Posts : 1
    Windows 7 Professional 64bit
       New #1

    UEFI Booting of GPT partition doesn't work after 2nd HDD was added


    Good day,

    I have an Asus Z68 mainboard with UEFI-BIOS. Windows 7 Professional 64bit is installed in UEFI mode on a GPT partitioned drive (SSD). It worked flawlessly.

    Now I added my second, old harddrive, that is still MBR formatted.
    Windows won't start anymore, instead I am seeing "Windows is loading files", then a blinking cursor, and that's all.

    I have two options in BIOS regarding boot priority:
    1) I can boot from the SSD as primary priority
    2) I can select an option called "Windows Boot loader", I think this refers to the UEFI boot code that Windows wrote to the UEFI.

    If I select the first option, I get the "Windows is loading files screen" and then the "Windows has detected a startup error, do you want to repair the system startup" screen. If I select "Start Windows normally", I get a blinking cursor and then nothing. If I select "Repair startup", I see "Windows is loading files", and then again the "Startup repair screen". It is an endless loop.

    If I select the second option, I get "Windows is loading files", then a blinking cursor, and nothing more.

    Is there any way to get my Windows to boot again without disconnecting or re-partitioning the old harddrive?

    Note that the old harddrive is NOT for booting, as it is just a datastore.

    Philipp
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  3. DerekGCWhite
    Posts : 18
    Windows Home Premium x64
       New #2

    Philip,

    Have you checked that the BIOS is not trying to RAID your 2 devices, your should find that in Integrated Peripherals (or something similar) in the BIOS
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  4. theog
    Posts : 11,408
    ME/XP/Vista/Win7
       New #3

    Make sure the Hd Drive is showing in BIOS, also the boot order of the drives.
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