Windows has a rather famous bad habit of nuking any other OSes installed on the same drive, so you really do need an extra separate drive, which is inconvenient if you don't already have a separate drive.
Yeah this happened to me at least once, and I had to spend several hours with low-level recovery software to get my files back. This was the catalyst that finally got me to ditch windows for good 7 years ago.
This used to happen to me. But there was a time I just had two different drives. With different OS in it and used the bios selector to boot what I wanted
