I'm a bit new to using Ubuntu portably, i.e. on a usb drive. I successfully installed 9.10 on my 8gb usb drive with a 4gb casper. I booted Ubuntu from the usb drive and was under the impression I had 4 gb of space to install additional software. I've concluded that Ubuntu Live uses the casper only to save common settings with default applications.
Ok, so I'm wondering if I can just install Ubuntu to the USB drive and use it as a fully functional Ubuntu 9.10 OS portably without altering any settings on the host machines I boot from.
TLDR? I want to boot Ubuntu 9.10 from my jump drive with the ability to install additional software that will be retained on a system restart.
Thanks in advanced.