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Today I tried updating Ubuntu 13.04 to Ubuntu 14.04. The installtion went fine so I restarted my computer and it came up with a grub rescue> prompt! I have no idea what to do and I am no Linux pro(In fact I first heard about it a week ago:)). Please help now I can't even access windows right now and I need to get some work done, PLEASE HELP!

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marked as duplicate by Eric Carvalho, karel, Avinash Raj, Braiam, Seth Apr 1 at 3:52

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How did you upgrade from Ubuntu 13.04 to Ubuntu 14.04? –  Avinash Raj Mar 25 at 13:16
    
Please check Grub rescue prompt, repair grub –  Achu Mar 25 at 13:34

2 Answers 2

Don’t worry, do you have the livecd/usb there? Use it to start a live environment, and connect to a wireless network. Then open google and type boot-repair, the first link on my search it the Ubuntu community help wiki, there you can find these commands:

sudo add-apt-repository ppa:yannubuntu/boot-repair && sudo apt-get update
sudo apt-get install -y boot-repair && (boot-repair &)

Press Ctrl+Alt+T to open a terminal. To paste it in the terminal, copy like you usually do, and paste with Ctrl+shift+V, so you don't need to write it.

A small window opens up, select recommended repair. You have more instructions in the community wiki page for advanced options with the program.

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If you don't have a live enviroment, you can download the boot repair disk from here: sourceforge.net/p/boot-repair-cd/home/Home –  fpinto Mar 25 at 14:03
sudo add-apt-repository ppa:yannubuntu/boot-repair
sudo apt-get update
sudo apt-get install -y boot-repair 
boot-repair &

This does not yet work in 14.04 because the files for Trusty are not yet available. As I have the same problem, I will try to fix it by creating the boot repair disk.

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