A bootable USB drive is the best way to install or try Linux. But most Linux distributions—like Ubuntu—only offer an ISO disc image file for download. To format the drive -- and erase everything on it-- before installing Ubuntu, check the 'Format Drive' box. The utility formats the drive as Fat32. If you want to run Ubuntu from the USB flash drive and install apps or make changes, set a persistent file size using the slider in the Step 4 section.

Have a look at on installing Ubuntu to a USB drive. It will help you do exactly what you want and it's very simple. How to Install Ubuntu To USB Drives Installing Ubuntu to an external hard drive or USB memory stick is a very safe way to install Ubuntu.

If you are worried about changes being made to your computer, this is the method for you. Your computer will remain unchanged and without the Usb inserted, it will load your operating system as normal. When you connect and boot from the USB drive you will be given the choice to load Ubuntu or your usual operating system. Manual For Broksonic: Software Free Download.

What we need to install Ubuntu to a USB drive is a computer, an Ubuntu live CD/USB, and a USB drive. 8 GB is the minimum recommended size for a functional and useable system (although 4 GB is the minimum). We recommend an external hard disk and at least 20 GB. It is recommended to partition your USB drive, but not necessary, assuming you have 2GB RAM or more. Partitioning can be done from the Ubuntu live CD/DVD using 'disk utility', or from the installation partitioning menu. We recommend using a Live CD/DVD and unplugging any other USB drives as this makes life easier.