The only disk images of varying size used to be sparse bundles and sparse disk images. Now plain read-write disk images can also vary in the disk space they take, as explained here.
Sequoia
In Sequoia, dragging a window to the edge of the display could suddenly enlarge it to cover the whole screen. Finding the control in System Settings isn’t straightforward, and there’s no Undo either.
It’s easy to ensure that SilentKnight won’t inadvertently install an upgrade to Sequoia, but still updates the security data files you want. Here’s how.
You’ve just installed an update to XProtect in Sequoia, so why doesn’t it change the version number? How to fix this common problem.
Apple has just released an update to XProtect for all supported versions of macOS, bringing it to version […]
Focussing on sparse bundles and UDIF read-write disk images, this explains their types, structure, how their size can change, and how fast they are in use.
Overnight European time, Apple released a small but urgent update to macOS Sequoia, bringing it to version 15.0.1. […]
In Sequoia, XProtect’s data is now updated in a different way. Does this change its capabilities, though? A quick dip into YARA files has the answer.
From dispatch of a new automatic backup, through computing which items need to be backed up, cleaning up snapshots and old backups, to success at the end.
Pinning files and folders in iCloud Drive behaves differently, and can readily become frustrating. Behaviours explained, with an update to Cirrus to housekeep pinned files.
The Eclectic Light Company 