I can second this. When I first installed Linux I partitioned it to work on the same ssd as my windows install. I must have made a mistake (I don't know what) because my windows install ended up being formatted and I lost a copy of a video game world I had put over 100 hours of work in with a friend, it was very sad.
I thought I had a backup but I didn't test it properly so I actually didn't have a backup. I guess everyone needs to make this sort of mistake once.