MAC OS SCREENSAVER OPTION NEVER MAC
(Add the AppleScript to your Login Items list, in the Accounts System Preferences panel.) This solution doesn't require the user (or some clumsy routine) to get the Mac's MAC address first, and it doesn't require naming the plist file by its exact name, with that MAC address, when you write to it. (You don't have to redo these settings if you reconnect the drive to a Mac it's seen before, since the ByHost folder will retain the plists for every Mac it's already seen, unless these files have been trashed.)īut it's possible to change the screen saver's idle time value using a simple one-line AppleScript that the drive launches every time you start it up. This normally requires you to manually open the Desktop & Screen Saver System Preferences panel and change the idle time every time you connect the drive to another Mac that it hasn't seen before. For instance, you'll see that the screen saver kicks in after the default 15 minutes of idle time after you start up the drive on the next Mac, regardless of what setting you chose when the drive was connected to the last Mac you used it with. However, this makes it inconvenient when you have a utility drive that you connect to any number of Macs that those Macs haven't seen before. One purpose for this is to allow you to have your user folder stored on a network, letting you have different preferences for each Mac that accesses that home folder. The ByHost folder will gather a collection of plists for other preference panes, applications, etc., all with names containing the Ethernet ID specific to every Mac it's seen. These settings are at ~/Library » Preferences » ByHost » com., where 0011aa2233cc is the Ethernet ID of the Mac's primary Ethernet port ( en0), also known as the MAC (Media Access Control) address, which is a number unique to each Mac.
The settings in the Desktop & Screen Saver System Preferences panel are among several that don't stick when you move an OS X startup drive to a Mac that you've never connected the drive to before.
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