How to Monitor and Maintain Your MacBook's Drive Health
The guide explains how to back up a MacBook and use Disk Utility’s First Aid and S.M.A.R.T. checks to assess drive health, with optional third-party tools for deeper diagnostics.
Backing up a MacBook regularly—preferably with Time Machine to an external drive sized at least twice the internal storage—helps avoid catastrophic data loss from SSD or HDD failure. When problems arise, such as missing files or system warnings, users should start with Disk Utility’s First Aid, running it on each volume, then the container, and finally the whole drive, ideally from macOS Recovery for the startup disk. First Aid checks the file system but does not perform a full hardware inspection; the S.M.A.R.T. indicator, accessible via a journalist at one outlet button, offers a basic health readout.
For a more thorough evaluation, paid utilities like DriveDx can analyze additional health metrics, run SSD-specific tests, and track changes over time, though they are not essential for most modern MacBooks. External drives benefit most from such tools, as Disk Utility may not display S.M.A.R.T. data for them.
Why it matters
Understanding and regularly checking drive health protects users from data loss and costly recovery efforts.
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