Within the last year on the same system I've had both windows 10 and a linux install commit suicide via update with no particularly special conditions. I later figured out what happened with the linux system only after some frustration and paving over it. It was a defect in a distro provided config file that resulted in the initramfs not having the proper support for the filesystem.
With windows no automated repair could fix it and the whole system is so opaque that I will probably never know what happened other than it works after reinstall.
Even if nothing ever goes wrong you will eventually need to install to a new system and usb drives are incredibly cheap with a 64GB USB 3.1 weighing in at all of $8-$12. You needn't carry it around just stick it in a desk drawer.
With windows no automated repair could fix it and the whole system is so opaque that I will probably never know what happened other than it works after reinstall.
Even if nothing ever goes wrong you will eventually need to install to a new system and usb drives are incredibly cheap with a 64GB USB 3.1 weighing in at all of $8-$12. You needn't carry it around just stick it in a desk drawer.