How scheduling concurrent and background tasks using XPC Activity works, and compares with alternatives such as NSBackgroundActivityScheduler.
Transferring a decision-making guide from a quick flowchart into Tinderbox notes.
Can your Mac control sleep of its display, disks and system independently of one another? Many can’t.
There are now three different Recovery modes. This explains which to use, and provides a flowchart to help you work out how best to reinstall in them.
Over a month after the release of macOS Sierra 10.12.4, Apple quietly let slip the news that it […]
When part of the mechanism which schedules and dispatches Time Machine backups fails, those backups become irregular. Here it is shown in a clear diagram.
Diagrams how a routine Time Machine backup is scheduled and dispatched using CTS and DAS.
Apple has pushed out two further updates to the security tools which come with OS X El Capitan […]
The first detailed account of how macOS Sierra runs many of its background activities, complete with a diagram.
macOS doesn’t work like it used to. With heuristic task dispatching and sensitivity to factors like quality of network service, troubleshooting can get fiendishly difficult.