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I hope someone here might be able to help me.

I've just purchased a new Acer Aspire V3-771G laptop which came pre-installed with windows 8.

I shrunk the main windows partition and installed ubuntu 12.10. I then had to run boot-repair to be able to boot to ubuntu. Here's the paste url:

http://paste.ubuntu.com/5698647/

This worked and I could now boot ubuntu and it provided me with 3 other entries which should supposedly allow me to boot back to windows 8. However when trying these menu entries I get the following errors:

Windows UEFI bkpbootmgfw.efi

/EndEntire file path: /ACPI(a0341d0,0)/PCI(2,1f)/UnknownMessaging(12) /HD(2,c8800,96000,fe030bf1430a6047,9a,9a)/File(\EFI\Microsoft\Boot) /File(bkpbootmgfw.efi)/EndEntire error: cannot load image.

Windows Boot UEFI loader

/EndEntire file path: /ACPI(a0341d0,0)/PCI(2,1f)/UnknownMessaging(12) /HD(2,c8800,96000,fe030bf1430a6046,9a,9a)/File(\EFI\Boot) /File(bkpbootx64.efi)/EndEntire error: cannot load image.

EFI/OEM/Boot/bootmgfw.efi

/EndEntire file path: /ACPI(a0341d0,0)/PCI(2,1f)/UnknownMessaging(12) /HD(2,c8800,96000,fe030bf1430a6046,9a,9a)/File(\EFI\OEM\Boot) /File(bootmgfw.efi)/EndEntire error: cannot load image.

I have looked in the /boot/efi partition and the .efi files listed in grub are there but I always get this error.

I would be very greatful of any suggestions on how to get windows 8 to boot.

Many thanks, Tom

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There is a computer boot menu that you can access by pressing F12 when you turn the computer on, where normally you could find an entry to boot into Windows. If F12 is disabled, enable it from bios setup (F2 - Main - F12 Boot Menu). It looks like grub has trouble chainloading Windows under EFI. –  Mike C. Apr 12 '13 at 2:49

1 Answer 1

up vote 2 down vote accepted

You can try this:

  1. Run Boot-Repair --> Advanced Options --> tick Restore EFI backups --> Apply.
  2. Then in your BIOS, in the Boot order menu, select the Windows entry. It should boot Windows. To boot Ubuntu, you then need to select the Ubuntu entry in your BIOS.
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1  
Thanks that's worked and I can now boot windows 8. –  tomphp Apr 20 '13 at 11:06
    
Do add yourself to the bug:bugs.launchpad.net/ubuntu/+source/grub2/+bug/1091464 –  ubfan1 Apr 21 '13 at 19:02

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