March 11, 2008 02:51
I think it depends what operating system is "claiming" a particular USB device - you can't have two operating systems natively accessing the same USB device concurrently (well, at least not with a serial device). I've had this problem before.
If you plug in the USB > NMEA adapter before booting Windows via Parallels is will be claimed by OS X. In order to reallocate the device I believe that you need to select it from the "Devices" menu of Parallels (don't have it on this machine so can't check name) under USB devices. I think this does some kind of clever pass-through from OSX.
The easiest option is to not plug the USB adapter in until Windows has fully booted up and all services have loaded.
If you need to clarify which OS is claiming the USB adapter, look for it in Windows Device Manager on Parallels (Control Panel> System > Hardware > Device Manager) or System Profiler on the Mac.
Hope this helps..
If you plug in the USB > NMEA adapter before booting Windows via Parallels is will be claimed by OS X. In order to reallocate the device I believe that you need to select it from the "Devices" menu of Parallels (don't have it on this machine so can't check name) under USB devices. I think this does some kind of clever pass-through from OSX.
The easiest option is to not plug the USB adapter in until Windows has fully booted up and all services have loaded.
If you need to clarify which OS is claiming the USB adapter, look for it in Windows Device Manager on Parallels (Control Panel> System > Hardware > Device Manager) or System Profiler on the Mac.
Hope this helps..
Never knowingly overcanvassed!