[Solved] Unable to boot, Grub Rescue Error: No such Partition Solution Tutorial

If you have installed more than one Operating System in your PC. For example, you have Windows 7 & Ubuntu installed and suddenly you are unable to boot to any of the OS. If the error similar to given below appears:

That means you have a problem with your bootloader.

A very simple solution for this would be to boot into the live CD/USB and run Boot Repair

Boot Repair PPA

Boot into Live CD/USB.
Type the following in terminal(one line at a time)

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

Run Boot Repair
Type in terminal

sudo boot-repair

or

type in Unity dash
Boot Repair

Click the Recommended repair button
enter image description here
After the process is finished close everything.
This should solve your problem.

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