AirDrop is the extremely easy local peer-to-peer file transfer tool that is built into Mac OS X 10.7, it allows you to easily send and receive files wirelessly over a network just by dragging and dropping. It’s a great addition to Lion, but it’s not supported on all Macs (some 2008 model MacBook, MacBook Pros, some Mac Pro’s and Mini’s, etc), and most Hackintosh setups also can’t access it… and you can’t use it over Ethernet… until now.
You can enable AirDrop with Ethernet and enable AirDrop support on unsupported Macs running OS X 10.7+ by using the following defaults write command in the Terminal:
defaults write com.apple.NetworkBrowser BrowseAllInterfaces 1
Paste that in and hit enter. You’ll need to then kill the Finder with ‘killall Finder’ or reboot the Mac for changes to take effect.
What’s really interesting is that this enables AirDrop over both Wi-Fi and wired Ethernet connections, which basically means any machine running Lion can use it whether or not it has a wireless card. As long as it’s connected to the same network you will be able to see the Mac in the AirDrop list of another Mac running 10.7.
If you ever want to disable this for some reason, you can just use:
defaults write com.apple.NetworkBrowser BrowseAllInterfaces 0
This tip comes from a user submission to MacWorld, and attached is a note that you may need to use this command on all Macs that intend to interact with the unsupported Mac, although that doesn’t seem to be the case on all machines.
Don’t forget that you can also change the AirDrop sound effect too.