Disk Arbitration

Leopard
Disk Arbitration has changed in Leopard. It is now controlled thru launchd. launchctl is the control that sends the commands to launchd. The following will shut off Disk Arbitration on a Macintosh running Leopard.

sudo launchctl unload
/System/Library/LaunchDaemons/com.apple.diskarbitrationd.plist

Change "unload" the "load" to turn Disk Arbitration back on.

ActivityMonitor_DiskArbitrationd

Above, Activity Monitor shows us that diskarbitrationd now runs under the parent process of launchd.

Tiger
Disk Arbitration is Tiger is controlled through the removal or addition of a PList file in the appropriate directory.

I HOPE YOU MADE THE BACKUP in the first command!


To turn Disk Arbitration back on, copy the original file back to its original location


Reboot your system and Disk Arbitration is now on.