Windows 10: 3tb hard drive that has 746gb unallocated how can i fix? Solved

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  1.    16 Feb 2018 #1

    3tb hard drive that has 746gb unallocated how can i fix?


    ok i got a 3tb hard drive that has 746gb unallocated and computer management wont let me do nothing with it. i dont care what i got to do with this drive i just want access to the full size of the drive. can someone please help me out on how i might get this done?
    Attached Thumbnails Attached Thumbnails Capture.PNG  
      My ComputerSystem Spec

  2.    16 Feb 2018 #2

    You are hitting the 2TB limit of MBR - https://support.microsoft.com/en-us/...rger-than-2-tb

    There are instructions on that site that tell you how to convert the drive to GPT.

    Note that depending on your BIOS/UEFI setup, you may or may not be able to boot to this drive if you convert to GPT. It looks like you're not using it as your boot drive so you should be fine.
      My ComputerSystem Spec

  3.    16 Feb 2018 #3

    Oh ok thanks. I'll take a look at that and see what i can do, and your right im not using as a boot drive. Thanks alot for your quick reply
      My ComputerSystem Spec


  4. Posts : 10,916
    Windows 10 Pro and Windows 10 Pro Insider
       16 Feb 2018 #4
      My ComputersSystem Spec

  5.    16 Feb 2018 #5

    kingfish4200 said: View Post
    Oh ok thanks. I'll take a look at that and see what i can do, and your right im not using as a boot drive. Thanks alot for your quick reply
    Actually, I notice that you have a System partition on that drive so you might actually have boot files on there. Just to make sure, try physically disconnecting the 3TB drive and seeing if you can boot into windows. If not, then things get a bit more complicated.
      My ComputerSystem Spec

  6.    16 Feb 2018 #6

    PolarNettles said: View Post
    Actually, I notice that you have a System partition on that drive so you might actually have boot files on there. Just to make sure, try physically disconnecting the 3TB drive and seeing if you can boot into windows. If not, then things get a bit more complicated.
    lol you a exactly right and its causing me fits. I know my motherboard supports everything i need. iI have a msi b350m , a ryzen 7, and 32g of ram . It was useing all of it before, but I had some pc probs and I reinstalled windows and now i cant get it to use the full size of the drive now. In discpart it said " Virtual Disk Service error:Clean is not allowed on the disk containing the current boot, system, pagefile, crashdump or hibernation volume. "

    i am willing to reinstall or whatever it takes to make this work. what can i do?
      My ComputerSystem Spec

  7.    16 Feb 2018 #7

    By "reinstall" do you mean you are willing to completely wipe out both drives and do a clean install of Windows? That's the simplest option - just disconnect your 3TB drive and install Windows to your 128GB drive using the guide at Clean Install Windows 10 Windows 10 Tutorials . Then after everything is installed, connect your 3TB drive and wipe it.

    If you want to retain your current 128GB drive contents then you'll have to move the boot files to that drive. Disconnect the 3TB drive, boot to your Windows setup USB, and choose Repair. From there you can try the Startup Repair option. If that doesn't work then you can try manually rebuilding the BCD - How to Rebuild the BCD in Windows [10 to 20 Minutes] . Then after you are able to boot into Windows then you can reconnect your 3TB drive.
      My ComputerSystem Spec

  8.    16 Feb 2018 #8

    I was able to reproduce your boot setup (System partition on disk 0, Windows on disk 1). The Startup Repair and BCD rebuild from my previous post did not work.

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    I was able to boot to the 2nd drive by doing:

    1. Disconnect 1st drive. Connect the 2nd drive to the SATA port that the 1st drive was connected to (this will save you from needing to doing some BIOS configuration later).
    2. Boot to Windows Setup USB.
    3. Open command prompt (shift-F10)
    4. Run "diskpart" and the following commands.
      1. list disk (there should only be your 128GB drive)
      2. select disk 0
      3. list part (there should only be 1 partition)
      4. select part 1
      5. active
      6. list vol (drive C should have an asterisk)
      7. exit

    5. Run "bcdboot c:\windows"

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    6. Close the command window and setup window to shut down.
    7. Remove your USB drive and power up your system.
    8. Now your C: drive should have the System partition.
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    9. Power off, connect your 2nd drive to the SATA port where your 1st drive used to be, and boot up. You should be able to wipe it now.
      My ComputerSystem Spec

  9.    17 Feb 2018 #9

    can i just use a windows disk in my blueray drive and set the blueray drive as 1st boot device? do i have to use a usb?
      My ComputerSystem Spec

  10.    17 Feb 2018 #10

    You can boot from the optical drive as well.
      My ComputerSystem Spec


 
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