How to recover Rescue Grub Or Recover Grub Menu?-- with fsck

Dementor-source

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You are playing with your boot system(or maybe something else happened), and then you try to boot into ubuntu(or any other Linux-based Os) and it throws you to grub terminal. The reason might be a problem with grub (visit https://www.linuxandubuntu.com/home/ways-to-rescue-or-recover-grub-menu) or in my case your file system is corrupted. To Fix this:-
1) use live linux(pendrive/CD) to boot in (visit https://ubuntu.com/tutorials/create-a-usb-stick-on-ubuntu#1-overview)
2)open terminal and type "gparted" (install with "sudo apt install gparted" if not installed)
3)search for dev/sdxy(where x and y are variables) for which file system is showing error/nothing/notFound (you get the idea) ex: dev/sda6
4) now open terminal and run command fsck "dev/sdxy" : fill the x and y value found in point (3), ex: dev/sda6
5)follow along the process of "fsck".
6)restart(removing pendrive) and boot into normal ubuntu(or any other Linux-based Os) .
 

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