Windows 10: Issues with dual boot gone awry

  1.    11 Oct 2017 #1

    Issues with dual boot gone awry


    I had a dual-boot situation where I had windows 10 on one hard drive and ubuntu linux on another. I think the grub resided on the windows HD. The windows HD was the master and would boot first. I would then choose which OS I wanted to load. I believe the grub was placed there by ubuntu when I installed it on the 2nd hard drive.

    Fast forward to today. I went to install a different version of linux on my hard drive. When I did so, the grub on the windows HD failed to load correctly. Now when I try to load the windows HD all I get is:

    error: no such device: xxxxx-xxx-xxx
    Entering rescue mode...
    grub rescue>
    That's all I get and I have no idea how to get past this screen or the grub rescue prompt so that windows will load. Unfortunately I don't have any sort of windows cd or other recovery tool. Any help is appreciated.
      My ComputerSystem Spec

  2.    12 Oct 2017 #2

    If you have working Windows OS computer use Windows 10 Media Creation Tool to create a bootable Windows 10 media.
    You can boot your computer into Windows 10.

    Please boot your computer with Windows Setup Media and from Windows Recovery Environment start the Command Prompt.

    Please type below commands into Command Prompt and press Enter key.

    Following commands will repair Master Boot Record (MBR), Boot Sector and BCD Store.

    Bootrec /FixMbr
    Bootrec  /FixBoot
    Bootrec  /RebuildBcd
      My ComputerSystem Spec

  3.    12 Oct 2017 #3

    Once you get it working, virtualize Ubuntu. Much easier and won't affect your main OS.
      My ComputerSystem Spec

  4.    13 Oct 2017 #4

    I've always had trouble with virtualizing because I can never figure out how to install an OS with a usb drive instead of a cd/dvd.
      My ComputerSystem Spec

  5.    13 Oct 2017 #5

    Within Virtual box you can boot from a file iso or usb/dvd setting for the o/s your installing
      My ComputerSystem Spec

  6.    16 Oct 2017 #6

    You install using the .iso file. It's quicker and in some ways, easier than installing on a physical system.
      My ComputerSystem Spec

  7. ThrashZone's Avatar
    Posts : 3,667
    3-Win-7Prox64 2-Win10Prox64
       16 Oct 2017 #7

    If using a desktop I'd seriously consider a device like this one
    I have it on both of my desktops and makes dual booting os's especially Linux a joy and not a pain :)
      My ComputersSystem Spec

  8.    18 Oct 2017 #8

    FreeBooter, THANK YOU!! Those steps worked like a charm.
      My ComputerSystem Spec

  9.    18 Oct 2017 #9

    ThrashZone said: View Post
    If using a desktop I'd seriously consider a device like this one
    I have it on both of my desktops and makes dual booting os's especially Linux a joy and not a pain :)
    I have one just like that..
      My ComputerSystem Spec

  10.    18 Oct 2017 #10

    mazate said: View Post
    FreeBooter, THANK YOU!! Those steps worked like a charm.
    You are very welcome!
      My ComputerSystem Spec


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