When I connected a USB disk to my Macbook Pro with Windows 7 running as a Guest OS, a dialog box asked which machine did I wish to connect to - Mac or Windows. I accidently chose Windows and the box "always make this connection".
I actually want the USB disk to default to connection to Mac OS instead.
How can I change this default connection?
Have a look at: VMware Fusion (menu bar) > Help > Search > type USB then select Set the Default Plug-In Action for a USB Device
In other words, with the device connected go into the Virtual Machine Settings > USB Devices and set it so it always Connects to your Mac.
I'm not familiar with VMware Fusion, however I assume general like this settings are stored in on of the following files:
André
PS Just saw WoodyZ already answered the question while I was typing
Actually information for USB Plugin Behavior is stored in the VMUSBPluginBehavior key in the /Users/${USER}/Library/Preferences/com.vmware.fusion.plist file and is a Binary XML Property List, so it cannot be edited manually in TextEdit like a Plain Text XML Property List could, and requires a Property List Editor which by default is not installed in Mac OS X although it is available in Apple Developer Tools or other Third Party Utilities.
Additionally by default VMware Fusion does not use a config file and would need to be manually created however it does use the /Users/${USER}/Library/Preferences/VMware Fusion/preferences file which is the location the config file can be manually created if needed.