If you have an older Mac, don’t forget about the SD Card slot

This module may be the best way to expand storage.

how to format an sd card thumb800

SanDisk is one a range of vendors offering SD cards; formatting restores the cards to full capacity.


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Glenn Fleishman is the author of dozens of books. His most recent, updated for iOS 14, iPadOS 14, and Big Sur, are Take Control of iOS and iPadOS Privacy and Security, Take Control of Your Apple ID, Second Edition, and Take Control of Wireless Networking and Security. He’s a senior contributor to Macworld, where he writes Mac 911.
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