Ever wondered what format to use when creating a disk image in Disk Utility? After comparing the three main types on space efficiency, performance, and convenience, Howard Oakley came up with a clear winner.

After hearing about Ventura upgrade problems from a reader, Adam Engst did some research to determine that you should try to have at least 37 GB free before upgrading to Ventura. And how you determine that 37 GB might matter.

If you need to get rid of a Mac or external drive, how do you ensure that no one can access the data on it? Adam Engst runs through the various methods you can employ, one or more of which should address your situation.