In a computer there were two separate Windows 10 installations on two different Hard Disks. But the boot files were in Hard Disk 1.

Now Hard Disk 1 is formatted completely and the Windows 10 on it is reinstalled. But this new installation could not recognize the Windows installation on Hard Disk 2. How can I revive the Windows Installation on Hard Disk 2? Is there any boot manager to fix it?


It is probably not listed in the BCD file as the old one was deleted and the new one only contains the new installation.

I use a tool called Visual BCD to edit my BCD files.

Take a look at here at a tutorial and some more information:

How to use BCDEdit to dual boot Windows installations?

How to add a new OS entry via BCDEDIT?

| improve this answer | |
  • Visual BCD fails. Also it seems it is designed for Win 7 -. – Minimus Heximus Aug 3 '16 at 11:32
  • Oh right, did not know. I have used it on 8.1 successfully. Windows actually has it built in, it is just that it is command line and a bit trickier to use. – Bitten Fleax Aug 3 '16 at 12:47

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