Want one external drive from which you can boot two (or more) different versions of macOS? Here’s how to make it.
Adding volumes in APFS is quick and simple. But why would you ever want to add a container to a disk? An exploration of their differences, and when containers are useful.
A post-mortem analysis on attempts to make my iMac dual-boot between Sierra and High Sierra. Can it be done in safety?
You might want to read these tips before installing the first release of High Sierra. They could save you a lot of pain.