What is FileVault and why do I want it?

One of the reasons we love Mac is that they are very secure. But many of us are not using one of Apple’s greatest security features: FileVault. Filevault encrypts all …

What system software can my Mac run?

Update 12-July-2020: Added information about macOS Big Sur and recent computer models. This blog entry is a little different from my usual. Normally I have handy tips and tricks for …

Legacy System Extension warning

With Apple’s macOS 10.15.4 Catalina update yesterday, your computer is now likely warning you that you have Legacy System Extensions (sometimes called Kernel Extensions or kexts) that will soon cease …