Many of the problems that users have with Gnu / Linux are problems related to booting or booting our hard drive. Either due to a failed update, or due to a badly installed kernel or other operating systems, grub issues can be very annoying.
To solve this we have advanced commands but if we are novice users or we do not like to use the terminal, I recommend a tool called Boot Repair Tool, a tool that will correct all startup problems for us.
Most of the problems in Gnu / Linux are due to grub but can be solved with Boot Repair Tool
Currently Boot Repair Tool is a tool that we can install on distributions based on Debian and Ubuntu. This tool is not found in official repositories but it can be installed through an external repository. To install it on our system, we just have to open the terminal and write the following:
sudo add-apt-repository -y ppa:yannubuntu/boot-repair sudo apt-get update sudo apt-get install -y boot-repair && boot-repair
This will install the tool on our operating system. Once we have installed the system, we just have to load it and run the Boot Repair Tool. After this it will start a series of tools that will be in charge of recomposing the grub and returning it to the previous situation before the error, which in many cases will mean the elimination of a kernel, but rest assured that eliminating a defective kernel will not mean that we lose our files or our programs, everything will return to its normal course.
Boot Repair Tool is a very interesting tool, although it may not seem like it. But a tool that is not available for other distributions, sadly. It may be its only weak point, although it is also true that Distributions such as Fedora and OpenSUSE do not usually have problems in that regard. In any case we always have the option of a live-cd like Kali Linux, but it is somewhat more difficult than installing Boot Repair Tool Do not you think?