Also, macOS Mojave included pretty features, and get your work efficiently.

Exceptions: If macOS Sierra 10.12.4 or later was never previously installed, you will receive the macOS that came with your Mac, or the closest version still available.

The tools in macOS are more user-friendly than those in the Ubuntu installer, so we’re just “pre-staging” the formatting so we can grab it more easily during the install process. This will be the partition where you install OS X- on the Disk Management app, you can do this by using the 'Shrink Volume' button on an existing partition, and then creating a new partition out of the newly-created Unallocated Space.