Virtualbox: after install, trying to restart it, having two problems

Nils Kassube kassube at
Fri May 9 07:17:48 UTC 2008

Steven Davies-Morris wrote:
> 1) When looking at my virtual "general" definitions, I get this
> message:
> Failed to access the USB subsystem.

As root add a line

none /proc/bus/usb usbfs devgid=plugdev,devmode=664 0 0

to the file "/etc/fstab". Then run the command

sudo mount -a

in a terminal.

But be careful, don't give your guest system access to any devices which 
are needed / in use by the host, like mouse, keyboard, USB-stick. From 
the moment you enable the guest access, the host can't see them any 


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