Macworld - UK (2022-02)

(Antfer) #1
February 2022 • Macworld 17

W


ith macOS Catalina,
Apple changed
macOS’s structure
on a start-up volume.
Instead of a single commingled set
of system and data files, with Apple
trying to ensure the integrity and

Choosing this option ensures both your system and data volumes are
deleted. Glenn Fleishman reports

How to erase a Mac’s


hard drive


immutability of system files, the
company split it into two parts: a
system volume and a Data volume.
The two are melded together into
a ‘volume group’, an organizational
method added in Catalina. When you
boot macOS Catalina or later, the
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