What to do if Mac Internet Recovery won't work or you can't boot into Mac recovery mode. Plus how to enter Recovery on an M1 Mac.

However, if you have normal Recovery installed and it refuses to install macOS for some reason, you can manually invoke Internet Recovery.

As of macOS 10.12.4, released on Monday, a new keystroke combination at launch will allow Macs to netboot, and download the latest OS compatible with a computer when performing a recovery ...

How to make your own bootable macOS 10.12 Sierra USB install drive You'll need a Mac, an 8GB USB drive or SD card, and a little patience.