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Windows Won't Boot After Dual Boot

You've installed OpenBSD, FreeBSD, Linux, etc, and now Windows won't boot.

You are unable to boot into Windows after installing OpenBSD, FreeBSD, Linux, etc. Here is how to fix Windows boot problem:

  1. Reboot with a Windows DVD/USB.
  2. While it's starting to reboot, go to the BIOS Setup, and set the CD Drive as the master.
  3. In the Windows installation window, choose "Repair this computer".
  4. Open a Command Prompt and run the following commands. Then exit and reboot.
cd boot

bootrec /FixMbr

bootrec /FixBoot

bootrec /RebuildBcd

bootsect /nt60 all /force

Notes On Fixing Windows Boot Problem

  • I: It will reset your boot to Windows default setting. Therefore, you MAY/CAN lose your non-Windows boot settings.
  • II: It does not delete the non-Windows OSes installation themselves. Thus, you can later set up a dual-boot again.
  • III: The bootrec /FixBoot is not necessary, but I've added it anyway. In some case it may be necessary.
  • IV: Typical BIOS keys: F2, F10, F12, F1, or DEL.
  • V: Why are the screenshots low quality? Because I've shot them on a VM.
  • VI: Frankly, I hate GW-Gates Windows.

Windows 10 Not Booting After Dual Boot (Pictures)

Those 4-5 lines of code are enough. However, if you need a visual guide to fix windows startup problem, here is one:

dir c: d: e:

E:

cd boot

bootrec /FixMbr

bootrec /FixBoot

bootrec /RebuildBcd

bootsect /nt60 all /force

exit

― by BSDDOG

#Blog | #Windows