Windows 8 and 8.1 Forums


PC hangs at post screen when external HDD is attached

  1. #11


    Posts : 14
    Windows 8


    I'm a bit cool to the idea of installing the software just yet. Perhaps if I've exhausted all other possibilities.

    In the meantime, I did a little more searching on the problem. It appears most >2TB drives are formatted with GPT instead of MBR. The GPT contains UEFI boot information. My guess is that this UEFI info is tricking the "Windows Boot Manager" to include it in the startup sequence. I've connected an external 2TB that is MBR formatted, and the PC will boot without issue.

    Of course, I could convert the 4TB drive to MBR, but that would result in two partitions of 2TB. Ordinarily this would be a legitimate compromise, but my application needs as large a single partition as possible to minimize user maintenance.

      My System SpecsSystem Spec

  2. #12


    San Jose - California
    Posts : 2,847
    8.1x64PWMC Ubuntu14.04x64 MintMate17x64


    OK, You did not mention anything about this UEFI boot partition in your external HD. Does it really have a hidden partition ? can you verify it from Disk Management screen ?
      My System SpecsSystem Spec

  3. #13


    Posts : 14
    Windows 8


    No, that's just it, there isn't anything visible. Just a single partition that takes up the entire drive. But with GPT, it locks up on boot. The drive was wiped last night, so it's no big deal for me to convert to MBR and prove that it'll boot.
      My System SpecsSystem Spec

  4. #14


    Posts : 14
    Windows 8


    So, formatting the drive as MBR effectively solved the problem. However, the balance of the drive (1.6Tb or so) is unallocated, and cannot be formatted. This effectively makes the 4TB a 2TB - not a solution.

    Is there no way to modify the Windows Boot Manager to look exclusively to the internal SATA drive during boot?
      My System SpecsSystem Spec

  5. #15


    San Jose - California
    Posts : 2,847
    8.1x64PWMC Ubuntu14.04x64 MintMate17x64


    First, in the BIOS, you should set the internal HD as the first boot device and that's all you can do. Second, you might want to re-initialize your external HD to be GPT using diskpart.


    1. from the elevated command prompt, type: diskpart
    2. list disk
    3. select disk # where # is the disk number of your 4TB HD
    4. clean
    5. exit


    Open disk management and right click on the 4TB disk and initialize to be GPT and follow the following screens to complete.

    EDIT: Again, you might want to install the latest Intel Chipset drivers as said above.
      My System SpecsSystem Spec

  6. #16


    Posts : 14
    Windows 8


    BIOS has no such option. Under HDD, the only option is "Windows Boot Manager". There are other options such as "removable devices" and "Lan" - but digging into the HDD selection shows no actual drive. Just that WBM.

    The diskpart will take all night - I'll give that a go this evening.
      My System SpecsSystem Spec

  7. #17


    San Jose - California
    Posts : 2,847
    8.1x64PWMC Ubuntu14.04x64 MintMate17x64


    The diskpart will take all night - I'll give that a go this evening.
    It only takes few minutes, not all night.
      My System SpecsSystem Spec

  8. #18


    Posts : 1,121
    Windows 8.1 x64


    I have that problem with a 2 TB Seagate Backup Plus external USB 3.0 drive. I just don't plug it in until after the system has booted.

    The GPT drive is not related to UEFI except Windows decided the boot drive had to be configured as GPT. But you can run a GPT drive in Windows using MBR, just as long as it isn't the boot drive.
      My System SpecsSystem Spec

  9. #19


    Posts : 14
    Windows 8


    Ok, diskpart/clean completed, no difference. Still hangs. Saltgrass, the problem is, what if your computer power cycles while away from home and you need to get on it? I can certainly babysit it when I'm at home, but for a "superior" platform, it sure seems like we're walking backwards.

    Guess I'll give the chipset drivers a go now.
      My System SpecsSystem Spec

  10. #20


    Posts : 14
    Windows 8


    Created a restore point, and installed the 10.0.13 update from Intel. Rebooted, no change. There has got to be a solution to this. I can't imagine this isn't a widespread problem.
      My System SpecsSystem Spec

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PC hangs at post screen when external HDD is attached
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