You absolutely positively gotta backup everything before you "upgrade" to a new GUI for an old Windblows or there's a good chance you'll be sooo-rry. Eh, W8.1 just buried stuff in W7 making it more difficult to get at, nothing new and my guru being one of the lab rats said 10 is likable but no big improvement. All this has me thinking that until NT (New Technology) came along Windblows was only a GUI for DOS, then it became a stand alone system. BTW, if you look deep enough it still has imbedded software from Year One.
I have a whole bunch of toys to play with but haven't used partitioning stuff. I don't need partitions with W7 Ultimate, XP virtual and software on primary drive C and libraries on secondary data drive D. Once a month I deep scan everything for malware (normal scheduled scans daily) and run Active@ Disk Image creating separate compressed image backups of both on a removable HDD, but first move last month's backups to a USB3 HDD. Of course just in case a drive fails I have my bootable tools CD handy so I can format a new HDD and then use my recovery CD to restore everything. You never know with Micro$haft, once upon a time an "upgrade" gummed up the works and Godzilla would have been dead in the water without backup at the ready.
-Phred Co- is dead, without backup may it rest in pieces.