If we want to force the file system check at the start of our linux box can simply create at the root "/" file forcefsck:

# Cd /

# Touch / forcefsck

# Reboot

To enable the use of the kernel module for VirtualBox to users other than root you need to set permissions on the same:

chmod 660 / dev / vboxdrv
chgrp adm / dev / vboxdrv

This is sufficient until the next reboot of the linux box, if we are to preserve the permissions you need to edit:

gedit / etc/udev/rules.d/40-permissions.rule s

and add the following line:

KERNEL == "vboxdrv", GROUP = "adm", MODE = "0660"

Note: As a group adm was used, but could be any.