I have a "live cd" copied to a USB stick, which successfully boots on a PC, including the persistent that uses a casper-rw partition. But now I wish to boot this, including the persistent option, in a virtualbox session. This way I can play and toy with the contents as guest while my host is my real system, after which I can take my USB stick to another PC (eg. work, visiting someone) and being able to boot up all my stuff there.
gparted and create a new
ext2 Primary partition labelled
Boot from the usb Flash drive
From the boot-menu press ESC to see the boot prompt and type
All the changes that you make will be saved in the partition