Solving OS X problems: Finding old utilities, removing a partition, and migrating data

This week, Glenn answers questions about deauthorizing software, reinstalling AirPort Utility, managing a Fusion drive, and Migration Assistant.

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Glenn Fleishman is the author of dozens of books. His most recent include Take Control of Your M-Series Mac, Take Control of Securing Your Mac, Take Control of Zoom, and Six Centuries of Type and Printing. In his spare time, he makes Tiny Type Museums. He’s a senior contributor to Macworld, where he writes Mac 911.