GNU/Linux Ubuntu 16.04 Fixing GRUB Guide
Hi! The Tutorial shows you Step-by-step How to Reinstall/Fix GRUB 2 in Ubuntu 16.04 GNU/Linux.
And GNU GRUB for Ubuntu 16.04 is a very powerful Boot Loader, which can load a wide variety of Free Operating Systems, as well as Proprietary OSes with Chain-loading.
And a Boot Loader is in charge of loading and transferring control to a Kernel OS Software (such as Linux or GNU Mach).
The Kernel, in turn, initializes the rest of the Operating System (e.g. a GNU system).
Finally, this Setup is Required to Fix an OS Boot after a not achieved Installation or sometimes a GNU+Linux/Windows Dual Boot System.
1. Launching Terminal
How to QuickStart with Command Line on Ubuntu
First, Update the Apt Repo Sources with:
sudo apt update
Authenticate with the User Admin Pass.
If Got “User is Not in Sudoers file” then see: How to Enable sudo.
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