Booting a USB Stick in VirtualBox with a Mac OS X Host
Posted at December 30, 2013.
You can't just boot from a USB Stick with VirtualBox because it's BIOS does not support USB.
However, you can still get it to boot from USB.
But first, you have to convince OS X not to remount your USB Stick everytime it's
/dev/diskX file is accessed.
To do this, you need to know the Label of your USB drive (with spaces escaped with
\) and it's filesystem type (fat32 in this case).
/etc/fstab file, if it doesn't exist already, and mark your stick as
sudo touch /etc/fstab sudo nano /etc/fstab LABEL=yourUSBstick none fat32 rw,noauto
Then create a VirtualBox Disk Image, pointing to the block device file of your USB stick. Use diskutil to find out the device file name.
diskutil list sudo VBoxManage internalcommands createrawvmdk -filename rawUsbStick.vmdk -rawdisk /dev/diskX
Now, run VirtualBox as root
Create a new Virtual Machine, using the .vmdk file created before as virtual hard disk drive. Boot it, and...