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I had Windows 8 installed, and tried to install Xubuntu in another HDD on my desktop. After installation, I could only boot into Xubuntu, and never got into the OS selection menu in GRUB. So I ran Boot Repair in order to fix the boot problems.

The boot process got fixed, now it does boot into GRUB, where I have two Windows entries, but none of them actually work, I get the error:

error: no such device: 1CA0-4000
error: file 'EFI/Microsoft/Boot/bkpbootmgfw.efi' not found

I've tried to run the Windows 8 installation again, and chose Automatic Repair, but it was not able to correct the problem. So I guess the EFI files in the windows EFI boot partition of the 1st disk got deleted/chaged. How do I get them back/fix the windows bootloader?

I'm doing all of this with UEFI boot, both in the OS installed on the disks, and the installation media (booting from a USB flash drive).

joaocandre
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  • Please run the [Boot Info Script](http://sourceforge.net/projects/bootinfoscript/) and post a link to the `RESULTS.txt` file that it produces. – Rod Smith Jun 24 '13 at 20:22
  • Found the answer [here][1], following the instructions in @Alex answer. [1]: http://superuser.com/questions/460762/how-can-i-repair-the-windows-8-efi-bootloader – joaocandre Jun 27 '13 at 16:52

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