Why, after installing Virtualbox, an error occurs when the system boots?

Question

virtual box

I have ubuntu 14.04 installed Virtualbox, configured usb.
After that, when the system booted, an error occurred:
An error occurred while connecting /sys/bus/usb/drivers.
Press the S button to skip the connection or M for manual recovery.
What have I done wrong?
My fstab:

# /etc/fstab: static file system information.
#
# Use 'blkid' to print the universally unique identifier for a
# device; this may be used with UUID= as a more robust way to name devices
# that works even if disks are added and removed. See fstab(5).
#
# <file system> <mount point>   <type>  <options>       <dump>  <pass>
# / was on /dev/sda3 during installation
UUID=05c8a789-f35e-4d00-8e30-f6ec7a738559 /               ext4    errors=remount-ro 0       1
# /boot/efi was on /dev/sda1 during installation
UUID=5003-0C6B  /boot/efi       vfat    defaults        0       1
none /sys/bus/usb/drivers usbfs devgid=127,devmode=666 0 0

Answer 1

none /sys/bus/usb/drivers usbfs devgid=127,devmode=666 0 0

What is this O_o? And why? There is an error in it.

Answer 2

virtualbox locked usb forwarding to itself in autoload - it should also be removed in the settings. and it looks like a flash drive was plugged in when manipulating with virtualbox