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Microsoft won't fix Windows 0x80070643 errors, manual fix required
(www.bleepingcomputer.com)
This is a most excellent place for technology news and articles.
The RE Partition is for more than Recovery. If you've ever uninstalled an update then you've used the RE Partition.
Very good point! Then I have used it.
In this case I'm happy I always installed Windows without RE partition. It works fine and you can still uninstall updates. Broken system files can also be replaced by a fresh pull from Windows Update.