Well, one thing you should look into if you purchase win10 any version, is seeing if you can do a 'in place' upgrade. I believe that is the process that does not wipe any personal or programs but only upgrades the os itself. Clean install can and mostly will wipe out your saved everything. Clean install may or may not move things somewhere on the drive to put it back after.
Definitely you'll need to read each process to understand just what it's doing.
The actual process are much faster and pretty dependable. And they walk you through it as well. Hope I've given you some assistance in a timely matter.
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