Before you begin to change something in your working system, it is strongly recommended to make backups of your most valuable data, so you do not regret about their irretrievable loss. Everything you do is your fear and risk, no one encourages you to do it. The easiest and most reliable way to safely try to do it, turn off all the disks and the boot flash drive from the current system, take a clean disk and another USB flash drive and try to install a new version of the bootloader and the s