I don't know if this one had been posted already, but I found this on MacOS Hints by bbum. Like others I had the problem that I have partioned my harddrive to several different ones with one bigger partion of them holding my data. It was not possible to move the iPhoto Library to this partion an just put an alias of the directory to the original Pictures Directory. So here is how it works.
To change the default file store location, go to terminal and type:
defaults write com.apple.iPhoto RootDirectory /path/to/desired/location
To remove the change default:
defaults remove com.apple.iPhoto RootDirectory
Replacing the "/path/to/desired/location" with the directory path you want iPhoto to store the data. In my case it was /volumes/data/"iPhoto Library".
After this the default library is on my data harddrive.
To change the default file store location, go to terminal and type:
defaults write com.apple.iPhoto RootDirectory /path/to/desired/location
To remove the change default:
defaults remove com.apple.iPhoto RootDirectory
Replacing the "/path/to/desired/location" with the directory path you want iPhoto to store the data. In my case it was /volumes/data/"iPhoto Library".
After this the default library is on my data harddrive.
