lmaneke said:
The best thing to do if you do go to 10586 is to do a clean install. I had to do that on my PC because the update caused a lot of issues. Boot times are very slow, and the install will create extra recovery partitions, and takes up space, thus slowing down the computer.

The most common problem after the upgrade are system freezes and driver issues. There have been lots who have had a good upgrade experience, but there are those who havent.
I didn't run into any problems upgrading to 10586 lmaneke. I had thought media creation tool would just update files, but it basically installed the complete Windows 10 10586 over 10240. It took 3 hours to download the compete ISO, another 2 hours to download updates and about an hour to finish installation. And it left about 20GB in Windows.old, $Windows~BT, and $Windows~WS folders I'll just leave probably. I understand they might be automatically removed after 30 days.

10586 runs just as fast if not perhaps faster than 10586. It fixed the sketchy Elan touchpad drivers that made scrolling jittery in some programs. And I'm not longer having the display problem that left Firefox and a couple other programs with blank areas of their windows after minimizing and maximizing them again. Hibernation seems to be more reliable too. That's been sketchy for me in Windows all the way back to Win2000.

And the upgrade didn't create any extra partitions as you pointed out people have seen. I checked that running GParted after booting into Linux. Funny thing I noticed a while back is that Win10 from the factory had created a 4th 16MB msfres partition that isn't visible in Disk Management or any other Windows partitioning software I've used. That intrigues me. Can't wonder if it's related to the other new security functions Win10 has instituted.

So far things are looking great. Thanks for your feedback on this lmaneke.