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I have installed Ubuntu on my lenovo ideapad Y580 ( with win 8)

Ubuntu works great, but when I use grub to select windows ,

error can't find commend 'drivemap'
invaild  EFI file path

what does it mean? how do I fix this and use windows 8?

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2 Answers 2

I had the same problem... I used Boot-Repair, that helped a lot

sudo add-apt-repository ppa:yannubuntu/boot-repair  
sudo apt-get update
sudo apt-get install boot-repair

Then run Boot-Repair and you should be able to start Windows.

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I did a quick search and came across this:

Invalid EFI file path

I hope it helps.

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