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Time Machine

Ventura 13.3.1 can’t change the password of sparse bundles

hdiutil chpass, the only means of changing passwords for sparse bundles, doesn’t work in macOS Ventura 13.3.1. The workaround requires a VM and 13.1.

April 25, 2023 Macs, Technology

Should you remove duplicate files?

Save space on your storage and backups by removing all copies. But does it work if they’re APFS clone files? And does that housekeeping utility detect clones for you?

April 22, 2023 Macs, Technology

Ventura space management: what gets purged and how?

Performed by CacheDelete, it first looks at a wide range of macOS caches, and only at the end purges snapshots, to free up space when it runs short.

April 19, 2023 Macs, Technology

The Finder confuses with wildly inaccurate figures for available space

T T Read More

Good space management doesn’t bring new emoji, but it makes a big difference when the Finder doesn’t give completely inaccurate figures for Available space. A practical demonstration of its gross errors.

April 17, 2023 Macs, Technology

Why you should enable FileVault

T2 and Apple silicon Macs always encrypt the Data volume in internal storage. So why bother with enabling FileVault? And can you do that on external bootable disks?

March 31, 2023 Macs, Technology

How does Time Machine make a backup?

Detailed account from the decision to start making an automatic backup to its final reporting and completion, for Ventura 13.2.1 to local storage.

March 1, 2023 Macs, Technology

How to get the Trash working properly

You’re running bit short of disk space, so put tens of GB of old files into the Trash, then empty it. Why doesn’t the amount of free space increase?

February 24, 2023 Macs, Technology

Scheduled activities: 3 launchd or DAS?

While macOS uses DAS-CTS to schedule hundreds of background activities, third-parties normally use launchd. Comes with a full diagram explaining DAS-CTS.

February 2, 2023 Macs, Technology

Backing up to network storage: checks and balances

Backing up with Time Machine to a NAS or other network storage is different. Here’s an account of how it creates and handles sparse bundle storage in Ventura 13.2.

February 1, 2023 Macs, Technology

Scheduled activities: 2 Running the activity

How running a background task takes a tiny fraction of second, although the task itself takes seconds or minutes, and why it’s run on E cores.

January 30, 2023 Macs, Technology

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