New
#21
observation
Not a solution but an observation. Double-booting W7 / W10 deletes all restore points in W10, but leaves W7 restore points intact. Same issue with XP / W7 (older OS deletes restore points of newer; in the case of XP, MS documented that somewhere). Double-booting 2 instances of W7 or 2 instances of W10 does not delete restore points. Because of these problems, I rely on non-MS partition imaging tools, and archive the images on external disks - takes a bit longer, but I never had any problems with that approach.