View Full Version : Time Machine doesn't recognize old backups on network drive

Jul 1, 2012, 11:10 PM
Before anyone brings this up: yes, I am aware that Apple does not officially support Time Machine backups to an external connected to an Airport Extreme Base Station. However, it's worked for 4 years now, and I successfully restored from said backups just weeks ago after purchasing two new computers.

That said, I've backed up each of my Macs to separate partitions on my 2 TB external via USB, but now that the external is connected to my network, Time Machine doesn't recognize the older backups. Any ideas why?

Jul 2, 2012, 01:44 AM
Have you run this command? I have to run it before I can use network drives as TM backups, but I dont have an airport base station.

defaults write com.apple.systempreferences TMShowUnsupportedNetworkVolumes 1

From http://code.stephenmorley.org/articles/time-machine-on-a-network-drive/