If the computer is not connected to the internet via an ethernet connection it will prompt for a wifi network to be chosen. If the original drive was not upgraded to High Sierra, that should be done first so the internet recovery feature on the computer is updated to High Sierra.Īgain, these instructions are intended for new internal SSDs only, with computers that have already had their original drive upgraded to macOS 10.13 High Sierra.ġ) After the new SSD has been installed into the computer, boot to internet recovery by pressing Command-Option-R until a globe is seen. Although Disk Utility should always be tried first, a Mac’s Terminal can be used to format the drive in these cases. Recently, some OWC customers have reported experiencing a situation where their new SSD will not show up in Disk Utility in High Sierra.