Lars Hecking wrote: > I recently doownloaded and installed the latest RHEL5 rpm from the VirtualBox > web site. While it generally works very well, I have been unable to get USB > access to work on the guest. > > This seems to be a very common problem. Many references to it turn up in a > web search, but I have not found a solution that works on CentOS 5. I got no > response on the vbox-users mailing list either. Can anyone here help? > > Among the things I tried were various /sys and /proc/bus/usb related fstab > and rc.sysinit changes. Drew a total blank on this one ... I have had the same problem. The only thing that I've found to work is this: Get your vboxusers group ID # cat /etc/group | vboxusers Remount the USBFS with your vboxusers GID # mount -t usbfs -o remount,devgid=GID,devmode=664 /proc/bus/usb /proc/bus/usb Change the permissions on /dev/vboxdrv # chmod g+rw /dev/vboxdrv Restart the vboxdrv service # service vboxdrv restart Now when you boot your VM up the USB devices aren't greyed out any longer. I suppose you could script this if you wanted, add the usbfs mount to /etc/fstab and have the chmod go in a startup script or something. Regards, Max