Windows 10: windows.old / windows10upgrade :(
ohh let me add , after the format i scan for windows update and then i update ALL , but after i see there no find the microfsoft update aniversary i click in the option to learn more then open a website and then download a program called windows 10 upgrade assistent and then this program install me the anniversary update , but this windows 10 upgrade assistent is who create this two folder ?? , idk why beacuse is not a upgrade from windows 7-8 to 10 is simple upgrade windows 10 to an uograde to anniverary , there no reason to create this two folder , btw the windows.old folder is about 8 gb or sometime the other is very small
The Anniversary Update is not a simple patch to your existing windows. It is a full install of a completely new version of Windows 10 called version 1607. You probably did a clean install of version 1511. The Upgrade assistant upgraded this to version 1607. That's why you have a Windows.old folder, your older version 1511 is kept there in case you want to go back to it. For 10 days after you installed the Anniversary update you will have the option to go back to the earlier one. This is in Settings > Update & security > Recovery. After 10 days the windows.old folder will be automatically deleted and the option to go back will be greyed-out and no longer available.
There is a 15 MB folder named C:\Windows10Upgrade dated Aug 3, 2016, that puts an icon on the desktop "Windows 10 Upgrade". I don't know what it is. Maybe from the assisted Anniversary upgrade?
Can the folder be deleted without causing problems?...
After successful upgrading to windows 10 I was left with 3 folders that weren't in system disk before:
they're not big but I don't like redundant folders
I did few times Disk Cleanup after system cleanup
So today I booted my Win10 machine to find that it wanted to upgrade because it didn't have the latest security? Something like that...
I have to say, something about the UI looked...'off'...I think the MS logo was slightly blurred also...