I am running a clean install of OS X 10.9.5 (Mavericks) and can't seem to locate the 'Find my Mac' feature that I have seen on my friend's machine.
What versions of OS X support 'Find My Mac'?
Find My Mac since 2021 requires at least Catalina (MacOS 10.15) to be running.
If you are running an earlier version of MacOS, there will still be an option to activate Find My in iCloud settings, however the Mac will not show up when viewing your devices in the Find My app or in iCloud.
The supported OS version for the various iCloud services can be found on Apple’s website. Specifically, for Find My, the requirements are: