Windows 8 and 8.1 Forums


Cannot boot from Win 7 SATA drive on a Win 8 computer

  1. #1


    Posts : 2
    Windows 8

    Cannot boot from Win 7 SATA drive on a Win 8 computer


    Here's the deal: I threw away my old computer, but kept the Windows 7 SATA drive. I bought a new computer with Windows 8, and plugged my Windows 7 drive into the next SATA slot hoping to be able to setup a dual boot mode. Of course, nothing is ever that easy.

    I can access the Win 7 drive through the file explorer as if it was an external HD, but it is not bootable. The disk manager lists the Win 7 drive as an "active, primary partition".

    What do I need to do to be able to make my Windows 7 disk bootable? I can only assume it has something to do with the UEFI, but I'm not sure.

    Thanks.

      My System SpecsSystem Spec

  2. #2


    Posts : 5,592
    ME, XP,Vista,Win7,Win8,Win8.1


    Welcome to EightForums.

    Can you post a screen shot of Disk management?

    Screenshots and Files - Upload and Post in Eight Forums

    How to Use the Snipping Tool in Vista - Vista Forums

    What type of license of Windows 7 x64 do you have?
      My System SpecsSystem Spec

  3. #3


    Posts : 301
    Windows 8 Pro


    If you have a OEM version of Win 7 that came with the old PC, you are probably out of luck because it will not recognize the new machine. If the hard drive is large enough, try creating a partition and installing Win 7 on the new partition, that will quickly tell you is the install disk will work. Another way is try a repair with the install disk.
      My System SpecsSystem Spec

  4. #4


    Posts : 2
    Windows 8


    I tried repairing with the Win 7 install disk that I had bought originally, but again, it would not recognize the old drive in order to progress forward.

    The Win 7 OS was an upgrade over XP, so it isn't an OEM version. However, when theog asked about the x64 license, I realized that the Win 7 OS is 32 bit, and of course, my new computer is 64 bit. Would that be the issue? If not, I'll post more info.
      My System SpecsSystem Spec

  5. #5


    Posts : 5,592
    ME, XP,Vista,Win7,Win8,Win8.1


    Windows 7 x32 will be one issue.

    Can you post a screen shot of Disk management?
      My System SpecsSystem Spec

  6. #6


    Posts : 301
    Windows 8 Pro


    Quote Originally Posted by natedogg1002 View Post
    I tried repairing with the Win 7 install disk that I had bought originally, but again, it would not recognize the old drive in order to progress forward.

    The Win 7 OS was an upgrade over XP, so it isn't an OEM version. However, when theog asked about the x64 license, I realized that the Win 7 OS is 32 bit, and of course, my new computer is 64 bit. Would that be the issue? If not, I'll post more info.
    I don't think 32 vs. 64 is going to matter, both should run on that machine, the problem may be getting that computer's mother board to recognize that hard drive because the OS was installed in another machine. Can you get into the computers setup screen - normally "F2" on boot?
      My System SpecsSystem Spec

  7. #7


    Perhaps obvious, but ... have you tried adding the Win 7 hard drive as a boot choice from Windows 8? Easy to do with EasyBCD.
      My System SpecsSystem Spec

Cannot boot from Win 7 SATA drive on a Win 8 computer
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