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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.
I have done this multiple times on servers. It's beyond simple and doesn't take but a few minutes. Follow the instuctions and you're gold.
Edit: In short, you use diskpart to resize the boot partition down, then use diskpart again to resize the recovery partition up with the space you created in step one.
Or you just runs the ps script provided by Microsoft. 1 line. No clue why they can't do that themselves for affected systems...
Change board says no
You could just free up space in the recovery partition