What does run around doing something mean?
I can't see any reason to run around deleting the recovery partition.
To run around doing something is to do it recklessly or haphazardly, or to flit about while doing it. Go around is related:
You can't just go around telling everybody what to do.
And both are often used in reference to doing something without paying attention or considering the consequences:
I can't see any reason to be so reckless as to delete the recovery partition.