How to uninstall /remove Windows 10 Technical Preview.

[Kalju]

How to uninstall Windows 10 Technical Preview or remove Windows 10 Technical Preview From Multiple Boot?

If you plan to test Windows 10, but you do not have free computer, then the following might be useful to know before begin.

Posted by: KapilArya@TWC [http ://www.thewindowsclub.com/]
More from this author: http ://www.thewindowsclub.com/author/kapilatwc

Some time ago, Microsoft released Windows 10 Technical Preview to the public for testing purpose. In order to remove general annoyances and bugs, Microsoft is offering us these preview versions. If you’ve already installed Windows 10 on your system, and you’re facing some issues in running your system smoothly, then this post is for you, since it will tell you how to remove or uninstall Windows 10 Technical Preview Updates.

Since you’ve installed this version either by upgrading the system or in a multi-boot environment, the earlier existing stable copy might have been disturbed. Personally I found my own laptop flashing weirdly during booting, after installing the preview, especially the new updates. I made it dual boot with Windows 8.1, and it seems like the preview has already disturbed the stable copy. Well, if you too are facing issues on your machine after installing preview updates, you can remove them using the following methods:

1. Uninstall Windows 10 Technical Preview From Upgraded System;
2. Remove Windows 10 Technical Preview From Multiple Boot.

Continue reading here: open source or use this URL

http://www.thewindowsclub.com/uninstall-windows-10-technical-preview

[A.lemane]

i simply deleted all partitions (4) that contain the sys ^^ (uefi-GPT)

using boot it bare metal