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I have partitioned my HDD and installed /cloned Windows 10 Home OS on both, the idea being that if one OS fails I can switch to the other identical one. Both OS show on the dual boot prompt, but unfortunately only one OS boots. I tried just about everything.How can I get them both booting, either one or the other?

It is odd, because on the same partition of the same HDD I used to have Windows 7 along with Windows 10 and I could boot on both if I wanted. I removed Windows7.

Dave M
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Ittiandro Vivona
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1 Answers1

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Boot to WinRE and use BootRec:

  1. Boot to WinRE:
    1. Settings > Update & Security > Recovery > Advanced Startup - Restart Now
    2. Troubleshooting > Advanced > Boot to Command Prompt
  2. Issue the following:
    • BIOS: bootrec /fixmbr && bootrec /fixboot && bootrec /rebuildbcd
    • UEFI: bootrec /fixmbr && bootrec /rebuildbcd
  3. Reboot
    • Close terminal > Continue to Windows 10
JW0914
  • 9,096