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After a difficult installation of ubuntu on a win 8 asus n56v, now I only can get ubuntu running... On starting computer I get different options including some win 8 (eg on sda2). I tried boot repair but didnt work. after choosing win8 i get message: "cant find command drive map" and "invalid efi file path". more info: http://paste.ubuntu.com/6112607 and here: http://paste.ubuntu.com/6114637

thanks, yoeri

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marked as duplicate by Braiam, Rinzwind, Kevin Bowen, Warren Hill, Alaa Ali Sep 19 '13 at 8:24

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So what happened when you picked the win8 option from the grub menu –  damien Sep 16 '13 at 0:26
    
message: "cant find command drive map" and "invalid efi file path" –  Yoeri Coune Sep 16 '13 at 8:06
    
Does this answer help you askubuntu.com/a/297436/71679 –  damien Sep 16 '13 at 8:21
    
extra info that might help: paste.ubuntu.com/6114637 . Thanks for the other suggestion, Damien. I get a warning though when I want to install the deb of refind... –  Yoeri Coune Sep 16 '13 at 12:13

2 Answers 2

Have you tried booting into windows without using grub? If you have an option to access UEFI have you tried booting from there? Try booting the recovery partition. I don't know why, but in the past the one that said recovery was actually my primary os. If that one doesn't work, try each of the listed efi's one at a time using the entry that looks like this:

menuentry "Windows UEFI bkpbootmgfw.efi" {
set root='(hd1,gpt1)'
chainloader /EFI/microsoft/BOOT/bkpbootmgfw.efi

}

If that one doesn't work, change bpkbootmgfw.efi to bootmgfw.efi and try that one.

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Tried, but no: invalid efi path. –  Yoeri Coune Sep 16 '13 at 18:04

Well, what finally did it: reinstall of windows 8!

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