I want to be able to create a Ubuntu boot disk using a USB flash drive. I also want to be able to create a second partition for my data on the same drive. How can I create the partition in Win7? The flash drive is 8Gb in size. The idea is to be able to run a self-contained Ubuntu from the flash drive with Ubuntu opsys on the first partition and any data that I might create to be saved to the second partition.
Normally you can't create two or more partitions on one single USB, however if you use unetbootin to install the Ubuntu image, there should be a persistance option, allowing you to store things in that persistance partition. Henceforth if you boot the live USB again you won't lose your data.