I was recently wiping data out of one of my disks intending to sell it. There was a windows system installed there, which I wanted to get rid off anyway, so I let the process run while I was taking a nap. When I woke up and restarted the system I was very surprised to see that now my Linux system is missing and nothing works anymore except BIOS. Turns out I deleted my bootloader. I managed to fix it but It was stressful as hell (remember to backup your system, I didn’t).

Weird things can happen during dual booting but it’s all a life lesson, a lot of fuckery especially with windows, which likes to mess things up.