Porteus can be installed to a flash drive or hard 
drive in several ways.

From Windows:
a) copy the contents of the ISO image to your drive
b) navigate to the \boot folder and launch the 
'Porteus-installer-for-Windows.exe' script
c) verify you are installing to the correct drive and press 'Enter' to 
complete the installation

From any Linux Distribution other than Porteus:
a) copy the contents of the ISO image to your drive
b) navigate to the /boot folder and launch the installer
'bash Porteus-installer-for-Linux.com'
c) verify you are installing to the correct drive and press 'Enter' to
complete the installation

From Porteus itself (booted from CD):
a) launch 'Porteus Installer' from the desktop menu,
 under the 'System' heading (if you are
prompted for the root password, it is toor)
b) plug in your usb drive or select a partition
on a hard drive
c) follow the on-screen instructions 

video presentations:
http://goo.gl/lB9uL
http://goo.gl/2noje

If you run into trouble please refer to the more 
detailed installation guide which can be found at
/boot/docs/install.txt or our website at 
http://goo.gl/ci4EE

Porteus Team