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System volume

Ventura volume layout

Updated charts of containers and volumes on boot volume groups for Ventura, with details of cryptexes and what they do.

October 25, 2022 Macs, Technology

Startup disk surgery in recent macOS: fixing bigger problems

When a startup disk is running short of space, needs a good clean up, or isn’t quite right, it’s tempting to try surgery. Here’s what you can get away with.

July 15, 2022 Macs, Technology

Where’s my Data volume? Navigating boot volumes in macOS 10.15, 11 & 12

The split startup volumes in Catalina, Big Sur and Monterey can be disorientating. Here’s how to find your way in the Finder and Terminal.

September 7, 2021 Macs, Technology

Why you can’t make a snapshot of Big Sur’s System volume to roll back

Snapshots are designed to make it easy to roll back to a previous state. Why then can’t you use a snapshot to roll back to an earlier version of Big Sur?

June 11, 2021 Macs, Technology

Is Big Sur’s system volume sealed?

How can you tell whether your Mac’s shiny new Sealed System Volume is properly sealed? You could easily be misled into thinking it isn’t.

November 30, 2020 Macs, Technology

Will Big Sur support the cloning of System volumes?

Looking at what’s involved in updating Big Sur’s new Sealed System Volume shows what’s necessary for successful cloning.

September 14, 2020 Macs, Technology
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