Cannot boot Windows from Boot Camp after Ubuntu 16.04 install

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I have a 2010 iMac and had Mac OS High Sierra and Windows 10 having installed Windows 10 via BootCamp. I then made 3 new partitions using Disk utility and installed Ubuntu 16.04 using these partitions as EFI, root and swap. I did not touch the Bootcamp partition which is still present. Refind on the ALT menu still find Windows, but when I try to boot it I get a "Missing Operating System" message in plain white text on a black background. I have tried using a Windows install DVD to repair startup without success and also tried to re-install Windows but I get a "Too many partitions" message from the installer. Is there anything I can do make Windows boot again on this machine without losing Ubuntu? Can I edit the MBR from Ubuntu or Mac to get Windows booting again?







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    I have a 2010 iMac and had Mac OS High Sierra and Windows 10 having installed Windows 10 via BootCamp. I then made 3 new partitions using Disk utility and installed Ubuntu 16.04 using these partitions as EFI, root and swap. I did not touch the Bootcamp partition which is still present. Refind on the ALT menu still find Windows, but when I try to boot it I get a "Missing Operating System" message in plain white text on a black background. I have tried using a Windows install DVD to repair startup without success and also tried to re-install Windows but I get a "Too many partitions" message from the installer. Is there anything I can do make Windows boot again on this machine without losing Ubuntu? Can I edit the MBR from Ubuntu or Mac to get Windows booting again?







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      up vote
      0
      down vote

      favorite









      up vote
      0
      down vote

      favorite











      I have a 2010 iMac and had Mac OS High Sierra and Windows 10 having installed Windows 10 via BootCamp. I then made 3 new partitions using Disk utility and installed Ubuntu 16.04 using these partitions as EFI, root and swap. I did not touch the Bootcamp partition which is still present. Refind on the ALT menu still find Windows, but when I try to boot it I get a "Missing Operating System" message in plain white text on a black background. I have tried using a Windows install DVD to repair startup without success and also tried to re-install Windows but I get a "Too many partitions" message from the installer. Is there anything I can do make Windows boot again on this machine without losing Ubuntu? Can I edit the MBR from Ubuntu or Mac to get Windows booting again?







      share|improve this question














      I have a 2010 iMac and had Mac OS High Sierra and Windows 10 having installed Windows 10 via BootCamp. I then made 3 new partitions using Disk utility and installed Ubuntu 16.04 using these partitions as EFI, root and swap. I did not touch the Bootcamp partition which is still present. Refind on the ALT menu still find Windows, but when I try to boot it I get a "Missing Operating System" message in plain white text on a black background. I have tried using a Windows install DVD to repair startup without success and also tried to re-install Windows but I get a "Too many partitions" message from the installer. Is there anything I can do make Windows boot again on this machine without losing Ubuntu? Can I edit the MBR from Ubuntu or Mac to get Windows booting again?









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      edited May 17 at 7:24

























      asked May 16 at 11:14









      Simon Baldwin

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