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

Apple has released macOS Sonoma for anyone to download and install on a supported Mac computer. Here's how to do that and why you should upgrade.

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.