Want to back one Mac up to another? Or backup a Macbook up to an iMac? Or a Mac desktop? Whether you have a Macbook Air, a Macbook Pro, a Mac Mini or an iMac, here’s how to make Time Machine back up one Mac to second Mac, instead of a Time capsule or other external drive, and how to get Time Machine to recognize the target Mac or Macbook as a valid backup disk.

The Detroit Free Press is reporting on a second Tesla autopilot crash. The crash, which was nonfatal, occurred last week in Pennsylvania. The more widely reported, fatal Tesla crash that happened in Florida on May 7th, killing Joshua Brown of Canton, Ohio, also involved the use of the autopilot feature.