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new to Linux and am using Ubuntu 12.04 LTS. I'm having problems with the boot manager, as the GRUB2 menu is not allowing me to launch Windows 8. The Windows 8 Launcher option gives me this message every time I use it:

error: unknown command 'drivemap'.
error: invalid EFI file path.

Press any key to continue...

I have run boot-repair and that got the Ubuntu launcher working, but the problem with the Windows launcher in GRUB stays persistent. http://paste.ubuntu.com/7091293

Luis Alvarado
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im_4rm_bompton
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  • Did you install Ubuntu on Legacy Mode (Non-UEFI)?

    Please read http://askubuntu.com/questions/221835/installing-ubuntu-on-a-pre-installed-windows-8-64-bit-system-uefi-supported

     – Luis Alvarado Mar 14 '14 at 18:05

2 Answers2

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Your install is UEFI.

It looks like you ran the 'buggy' UEFI in Boot-Repair. That is only required if you have a system that only boots Windows from UEFI menu.

To undo & to rename files to their original names, you just need to tick the "Restore EFI backups" option of Boot-Repair.

Also it looks like the only boot entry that will work currently is:

Windows UEFI bkpbootmgfw.efi

That is the renamed file that Boot-Repair renamed. If you undo the rename it will be without the bkp at beginning.

Boot-Repair also adds all the efi files that HP added as boot options. If you do not want those you have to edit 25_custom.

sudo cp -a /etc/grub.d/25_custom /etc/grub.d/bkup25_custom
gksudo gedit /etc/grub.d/25_custom
sudo update-grub

It also looks like os-prober is writing BIOS type entries that will not work.

oldfred
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Try

apt-get install os-prober && os-prober
Erikas
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