Why won’t Ventura let you run a copy of one of its bundled apps, and why does it refuse to run some command tools?
log
Enabling CFNetwork diagnostic logging now requires SIP to be disabled in macOS 13.4.
Why should you trim an SSD? How to tell whether an SSD needs trimming, finding out whether it has trim support, and whether it does trim.
Details of what happens when an APFS (Encrypted) volume is mounted, when mounting a Time Machine snapshot, unmounting a volume, and loading a Cryptex.
A step-by-step account of how Disk Arbitration and APFS mount an external disk, from handling its partitions, to performing trims.
Update adds a 22nd tool, to display a log extract tailored to examining the mounting of APFS disks. Also valuable for any APFS investigation.
Traced from recognition of the cable connection, through establishing PCI streams, to mounting the volume with APFS, and the bonus of a good trim at the end.
I was having problems in the Twitter app, with it stealing 100% CPU and upsetting WindowServer. Here’s how I discovered what the problem was.
How to develop predicates, filters and styles interactively, then add them to Ulbow’s settings. And how to transfer those settings to another Mac.
A revamped configuration profile to remove censored private data from log entries, and how to get network diagnostic data too.
The Eclectic Light Company 