How do I create a Time Machine schedule for backups?
How do I create a Time Machine schedule for backups? I have a MacBook Pro and an external drive for Time Machine backups. However, I don't like keeping the external drive connected at all times (I don't have a lot of room on my desk). So I would like to be able to create my own schedule on a certain date every month, say on the 15th of each month, to hook up my external drive and use Time Machine to backup my files. (Right now, I get messages saying that my Time Machine backup "failed," because it has a default schedule on it, I guess.)
MacBook Pro, Mac OS X (10.7.5), Time Machine - scheduling problem