zdnet[.]com/article/how-to-create-a-windows-recovery-drive-in-4-easy-steps-before-its-too-late/
IMHO you're best off creating a disk/partition image backup of the 4 Windows partitions and any other partitions with software. That clones each partition to a VHD -- restoring it clones the partition(s) to a physical hard disk/SSD. Restoring a backup puts things back *exactly* like they were when the backup was created -- no muss, no fuss. But for many that's overkill, &/or they just don't want to bother. In that case a recovery drive [USB stick] should boot the PC/laptop, giving you the tools built into Windows Recovery [that 4th partition Windows installs]. In this article Ed Bott tells you how to create one.