In the event that you know about both Windows and Ubuntu, you'll see that Ubuntu does not have any Safe Mode or Auto repair instruments, similar to Windows have.so now lets learn how to repair ubuntu.
Ubuntu's most recent adaptation 16.04 requires no less than 2 GHz double center processor, 2GB slam and 25 GB space in HDD. In any case, regardless of the possibility that you are utilizing a more seasoned form, for example, 14.04 workarounds portrayed in this guide will work like the most recent variant of Ubuntu.
Ubuntu provides a Recovery menu and in addition reinstall alternative utilizing that you can settle a Ubuntu establishment without getting influenced your projects and documents. This guide is committed on How to repair Ubuntu on the off chance that it won't boot and you'll discover approaches to offer life to your current Ubuntu installation.
NOTE : If you see that your PC is not booting anything, or you are not readya to boot up by means of a USB and Live CD, you have to check the design of your Pc's boot arrange. Be that as it may, if this does not help you may won't care for it, but rather you most likely need an equipment overhaul.
How to Repair GRUB2 When Ubuntu won't Boot
Ubuntu 16.04 LTS and other Linux appropriation make utilization of the GRUB2 boot loader, which implies if there is an issue with your GRUB2 boot loader, perhaps that is the reason you are not ready to boot Ubuntu. Be that as it may, it can be settled by repairing the GRUB2 boot loader. Take after the means and you'll figure out repair Ubuntu on the off chance that it won't boot by altering the GRUB boot loader.
To check in the event that you have entry to GURB2 boot loader, begin your PC while holding the SHIFT button. It ought to open a menu which contains the rundown of install Operating systems. In the event that you see the menu, implies you just got to the Grub boot loader.
Another side of the coin, in the event that you didn't see a menu with boot choices. Conceivable outcomes are that your GRUB boot loader is not working and keeping Ubuntu from boot. GRUB boot loader can be overwritten in the event that you install Windows OS after Ubuntu Installation. Introducing windows make it is claim boot loader to the boot part, so unless you alter GRUB boot loader, you won't have the capacity to boot into Ubuntu.
On the off chance that you stressed that in the event that you repair the GRUB boot loader possibly it will forestall Windows to boot and make just Ubuntu boot. GRUB can likewise be utilized to set a Dual-boot environment on your PC. fundamentally, you ought to install any Linux conveyance in the wake of install Windows, it will come about a double boot setup through GRUB.
Be that as it may, obviously, something turns out badly with your GRUB boot loader, and here is the means by which to settle it. Step by step instructions to Repair GRUB2 When Ubuntu won't Boot:
To repair the GRUB, you require a Ubuntu Installation USB or Disk. Since you have to boot into the Linux system so as to repair GRUB. In this segment, we could help you reinstalling GRUB2 boot loader on Ubuntu. You can utilize either the graphical installer or basic terminal summons. In any case, for that, you may need to download a Linux dispersion and blaze into a USB or circle, however read beside locate a basic technique.
To make this less demanding, you can simply utilize this committed Boot repair circle and your Pc will be booted straightforwardly to the graphical boot repair apparatus.
Once this tool did repair the GRUB Bootloader, you can restart your computer and this time Ubuntu should load fine.
How to Repair Ubuntu If It Won't Boot:-
When you see the GRUB boot menu, you'll discover choices to repair your system. You have to pick the 'Propelled choices for Ubuntu' option with the assistance of arrow keys and press enter. A submenu will be open, on that pick 'Ubuntu .. (recuperation mode) and press enter.
The GRUB ought to boot your Ubuntu system in recuperation mode menu, and your documents will likewise stack in a read-just mode. You'll see a bundle of various alternatives, here are the points of interest of the choices.
Select a option and press enter.
Clean : This charge will attempt to free up space on your document system. This is just useful if your capacity is full and due to that Ubuntu is not booting.
dpkg : It is useful, and it repairs broken software-packages.
failsafeX : Corrects any issue because of a design driver or graphical server arrangement.
fsck: It will filter the filesystem and alter any mistakes.
grub: Ths will upgrades the GRUB bootloader. This won't help in the event that you can get to the grub boot loader.
Network : Turns on systems administration, since it is handicapped in the recuperation mode.
root: Starts the root shell incite and from here you can give orders and can alter issues with your Ubuntu establishment. Us this of you know how to utilize it and what you are doing. Since it is progressed and why to alter the issue by your own.
Also Read: How to Take ScreenShots on windows 10
Reinstall Ubuntu While Keeping Files and Programs.
On the off chance that there is still an issue booting your Ubuntu installment you are left with one final alternative. You are still ready to boot up repair Ubuntu with a USB or Live CD. Boot up utilizing the establishment media, the Ubuntu setup ought to have the capacity to finance the current install and offer a 'reinstall Ubuntu' choice.
Pick the choice, and a reinstall will be performed. It will keep your records and individual settings. It can likewise keep softawre packages and your other individual information. The reinstall highlight will vanish the framework related settings and will make the default. So that ought to right every one of the tricks and mistakes by any system setting setup.
On the off chance that you select that alternative and experience the procedure to reinstall Ubuntu, the GRUB2 will likewise be reinstalled; it'll settle any setup mistake. This strategy will settle your Ubuntu if didn't boot. Since hypothetically you did install the Ubuntu like you install the Ubuntu first time.
Nonetheless, on the off chance that you are still not ready to boot Ubuntu, I think there is an issue with your PC's equipment or possibly with hard disk drive.