How to make smooth USB access available to Virtualbox vm

Solène solene at
Tue Jul 5 07:56:36 UTC 2016

Le 2016-07-05 01:35, Manish Jain a écrit :
> Hi,
> I am running VirtualBox under FreeBSD 10.2 amd64. I created a Windows 
> XP
> vm for some work I need to do. The vm needs data which I placed on a 
> pen drive. I added a filter under VirtualBox to pass the pen drive to
> the vm and then started the vm. The pen drive for some reason is not
> smoothly visible to the vm - the icon for removable drive in the vm
> keeps coming and going every 1-2 seconds. I think the problem is the
> Gnome3 desktop environment and VirtualBox are competing for the USB pen
> drive. On the host FreeBSD system, I repeatedly get error messages
> "Unable to mount volume" - some error related to HALD. I tried setting
> hald_enable="NO" in /etc/rc.conf and then rebooted FreeBSD. Upon
> restart, the situation remains the same - the vm does not see the pen
> drive long enough for the data to be copied out.
> Can someone please help me ? What I want is that the pen drive is under
> the control of VirtualBox, with no interference from the desktop
> environment.
> Thanks for any help.


I am not sure this is possible, the handbook contains contradiction 
about usb support :

On the top it's said that you need to install extension pack to get USB 
but that this pack isn't available on FreeBSD

> but with closed-source components available in a separate extension 
> pack. These components include support for USB 2.0 devices.
> More information may be found on the “Downloads” page of the 
> VirtualBox™ wiki. Currently, these extensions are not available for 
> FreeBSD.

And in the middle of the page, there is a section about "21.6.2. 
VirtualBox™ USB Support"

The official wiki confirms that USB2/USB3 supports is given by 
installing extensions

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