I want my system to boot in 32 bit kernel everytime instead of the default 64 bit until 64 bit works with all (or most) of my plugins. At the moment my UAD2 card becomes invisible when running with the 64 bit kernel. I simply don't know enough about the OS to understand the text below entirely. What does it mean (Terminal ie). "Method 2: On-disk setting (persistent) To select the 64-bit kernel for the current startup disk, use the following command in Terminal: sudo systemsetup -setkernelbootarchitecture x86_64 To select the 32-bit kernel for the current startup disk, use the following command in Terminal: sudo systemsetup -setkernelbootarchitecture i386 Note: This setting is stored in the /Library/Preferences/SystemConfiguration/com.apple.Boot.plist file and will take effect every time you start up from this disk. If you start up from a different disk, the setting on that disk, or the hardware default, will take effect."