make a image with eg. 
ddrescue
 or Clonezilla
 or SystemRescueCd
 or Disk2vhd

dd if=/dev/sda of=/wtf/ImageFile.dd

Convert image into a virtual disc

VBoxManage convertfromraw ImageFile.dd OutputFile.vdi

Create a new VM and boot it :-D

Windows needs special care: Migrate_Windows

download http://ftp.de.debian.org/debian/pool/non-free/f/firmware-nonfree/firmware-nonfree_0.27.tar.gz or later

extract the files required and copy them to eg. /lib/firmware/e100/d101s_ucode.bin4

reboot and enjoy!

btw – fck intel for not beeing 100% DFSG conform!

On running System:
apt-get install apt-file
apt-file update
apt-file search /lib/firmware/e100/