dear all
am using virtual box and i need to ask if is possible to work 100% all my input/outpout devices with virtual box. i have installed winxp on virtual box and i need to work with my usbs. special my web camera and my PDA sycn tool. i go to settings then add the usb device but it doesnt work on windows. the only usb device that work is my western digital HD.
note: their is some fields like Serial No. that is empty does this make sense?
i have guest additions installed.
nothing on windows new hard ware found...

What Linux distro are you using as the host? And which version of VirtualBox? In recent versions adding them from the settings menu isn't necessary.

When I upgraded to Slackware 12 libusb took control of usb devices and so device information wasn't being stored in /proc. VirtualBox depends on /proc for usb devices. I don't know about "all" devices, but as long as the guest os can find it and load the appropriate drivers I think they should work, even if not in the host.

In the case of disks are you making sure that they are unmounted or unplugged before starting VirtualBox? Normally the guest doesn't automatically attach them during startup. In the VB status bar is an icon for usb activity. If you right-click on it a list of usb devices, those attached to the host, should appear and you can select the one you want to use. It may take two ot three tries.