Apple has changed its instructions for resetting/repairing permissions on your Home folder, and important cure for many problems.
SIP
The behaviour of quarantine flags, SIP flags, and the mysterious new com.apple.macl attribute, which never ceases to puzzle.
How does Catalina’s new privacy protection extend to folders such as ~/Documents? New information fills in detail.
Details of their locations, purposes, and the current installed version. These have changed a great deal since Mojave.
What to expect from the many changes to security and privacy in the first release of Catalina. How to run non-notarized apps, and more.
What should we learn from the “mysterious data corruption issue” which struck down Mac Pros used in editing studios?
Don’t just hold Command-R and hope that you’ll install the right version of macOS. Here’s structured decision-making to save you time.
Answers to the most commonly asked questions on my free utilities SilentKnight and its command tool sibling silnite.
System integrity protection, SIP, is a primary defence for your Mac. Yet it has had several known vulnerabilities. That’s why it’s changing in Catalina.
System Integrity Protection can get in your way, and may be recommended to solve compatibility problems. It’s also changing again in Catalina.
The Eclectic Light Company 