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diskutil

Should you ever repair permissions?

We used to repair permissions of the system until SIP. After a short break, we often repaired them again, this time on preference files. Why did Apple cancel that? Should we still try it for fixing problems?

January 27, 2022 Macs, Technology

Understanding snapshot data in Disk Utility

Explains the identifiers, sizes and tidemark data shown for snapshots in Disk Utility, in Monterey.

November 13, 2021 Macs, Technology

Disk Utility now has full features for managing snapshots

New for Monterey: Disk Utility now offers complete features for the management and maintenance of snapshots.

November 9, 2021 Macs, Technology

Juggling with HFS+ and APFS partitions and volumes: a primer

T T Read More

The differences between HFS+ and APFS volumes explored. What a container is, and how to add new HFS+ and APFS volumes to a disk.

October 12, 2021 Macs, Technology

Why you shouldn’t delete one of a Volume Group in macOS 11 or later

Why deleting either the System or Data volume, but not the whole Volume Group, could get your Mac into trouble in macOS 11 or 12.

September 21, 2021 Macs, Technology

Time Machine to APFS: Maintenance and repair

Given their very different structure, backups on APFS disks shouldn’t require routine maintenance. Checking and repair is performed using Disk Utility.

March 25, 2021 Macs, Technology

The trouble with snapshots: how can you copy them?

Until Big Sur started backing up to snapshots on APFS, there was little interest in being able to copy snapshots. Now we realise that we can’t.

March 24, 2021 Macs, Technology

Let’s make 2021 the year of Disk Utility

There’s no more critical app on your Mac, yet Disk Utility has suffered years of neglect – years in which APFS has grown many new features, and all Disk Utility gets is bugs and workaround.

January 1, 2021 Macs, Technology

Give your Mac (imaginary) unlimited storage thanks to Disk Utility’s bug

Disk Utility in Big Sur can turn a 1 TB external disk into 4.5 TB or more of imaginary containers. Sadly it’s just a bug, and here’s how to work around it.

December 26, 2020 Macs, Technology

Last Week on My Mac: Begging from Apple

We don’t know when Apple decided to introduce Big Sur’s SSV, but even now it hasn’t told users it won’t be releasing standalone updates for 11.0.1 or 11.1.

December 20, 2020 Macs, Technology

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