A guide to what you can do when a Big Sur or other macOS update goes wrong, from Safe mode to DFU mode and Configurator 2.
diagnosis
Diagnosing a problem on a Mac requires careful observation. In the case of kernel panics, this includes the Panic Log. Otherwise, invaluable information is in the log. If you don’t check the log, your conclusions are likely to be wrong.
Now checks whether the sudo vulnerability has been patched, and improves Spotlight search testing too.
Indexing and search diagrammed, leading to the diagnosis of problems with Spotlight, and their resolution.
Adds further features to diagnose Spotlight indexing and search problems. First full release at last.
Tools to help you discover the cause of Bluetooth disconnections, by assessing the link quality and more. For both Intel and M1 Macs.
Performs special analysis of Big Sur backups to APFS, and runs native on Intel and Apple Silicon Macs.
The most common problems with Time Machine backups, and how to tackle them using free tools.
An app crashes or quits unexpectedly. How can you work out what went wrong with it? An exploration using my free log browser.
Step through how to work out when, how and why a kernel panic occurred in the unified log, using Ulbow.
The Eclectic Light Company 