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Category Archive: Technology

Saturday Mac riddles 302

Here are this weekend’s Mac riddles to entertain you through family time, shopping and recreation. 1: Shortened characters […]

April 5, 2025 General, Macs, Technology

A brief history of disk images on the Mac

T T Read More

From their use to replicate floppy disks in manufacture, to their key roles in macOS, for distribution of software, and on network servers to contain backups. Unglamorous but essential.

April 5, 2025 Macs, Technology

Apple silicon VMs struggle to update to Sequoia 15.4

Is it possible to update a VM running macOS Sequoia to version 15.4? Three attempts, three failures. And why are all those file creation dates wrong?

April 4, 2025 Macs, Technology

A primer on predicates for LogUI

How to construct and use filter predicates to refine the log entries shown in LogUI or most other log browsers, and in the log command tool.

April 3, 2025 Macs, Technology

Can APFS special files save storage space?

Deleting clone files saves no space, but converting copies into clones could free up plenty of storage. Sparse files can also be highly efficient, and squeeze 285 GB into just 16.5 GB.

April 2, 2025 Macs, Technology

Apple has released an update to XProtect for all macOS

Apple has just released an update to XProtect for all supported versions of macOS, bringing it to version […]

April 1, 2025 Macs, Technology, Updates

LogUI build 37 now has more power for browsing the log

T T Read More

Adds support for using your own filter predicates so you only see the log entries you want. Either in a one-off editor, or to its popup menu.

April 1, 2025 Macs, Technology, Updates

Apple has released macOS Sequoia 15.4, and 14.7.5, 13.7.5

Apple has just released the update to macOS Sequoia to bring it to version 15.4, and security updates […]

March 31, 2025 Macs, Technology, Updates

Solutions to Saturday Mac riddles 301

I hope that you enjoyed Saturday’s Mac Riddles, episode 301. Here are my solutions to them. 1: Roll […]

March 31, 2025 General, Macs, Technology

External boot disks: structure and problems

T T Read More

Systematic and thorough account of the structure and function of bootable external disks and dual-boot systems from High Sierra to Sequoia, and how to diagnose their problems.

March 31, 2025 Macs, Technology

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