VirtualBox needs full user USBFS permissions

[werewolf]

I can plug in my USB thumb drive and it is recognized and mounted. I am running XP SP2 in VirtualBox, but USB won't mount because the permissions are incorrect. I have searched around alot for a solution for this, but can't find anything.

I am a total newbie so please be specific with procedural info.

All my drives are automounted, but I'm not really sure how this thumb drive is being mounted.

It seems that the USB process(?) has to have full rw permission. How do I do that?

Thanks.

[arunsub]

Re: VirtualBox needs full user USBFS permissions

Go to user management (user and group) and click on group, add group and add usbfs and check the user name in the same box and click ok. This should give the virtualbox usb access.

[arunsub]

Re: VirtualBox needs full user USBFS permissions

You have to logout and login, but it worked for me only after I rebooted the system. Reboot and login. See if it works. If it still doesn't work, then do the following in a terminal:
sudo kate /etc/udev/rules.d/40-permissions.rules
Change SUBSYSTEM=="usb_device", MODE="0664"
to SUBSYSTEM=="usb_device", MODE="0666"
Save and exit. Reboot.
It should work.

[olivier2831]

Re: VirtualBox needs full user USBFS permissions

Change SUBSYSTEM=="usb_device", MODE="0664"
to SUBSYSTEM=="usb_device", MODE="0666"

Changing access permission this way seems to be considered as a security hole in VirtualBox User manual (see 10.4.6 USB not working).

It would pleasant if we could find short and long term workarounds that preserve Kubuntu security and keep beginners like myself to investigate such topics.

In VirtualBox User manual (see 10.4.6 USB not working), you can read that with "Debian Etch the easiest way is [to edit a line in] /etc/init.d/mountkernfs.sh".

Though Kubuntu is Etch based, I can't such "domount usbfs ..." line in this file.
Maybe, we should first open a thread to get guidance about that point.

Regards