Forget the bare minimum: here's how much RAM you actually need to get the best performance out of your Linux system today.
However, if you put a portable Linux installation on a flash drive, you can carry your own operating system with you wherever ...
By my count, Linux has over 11% of the desktop market. Here's how I got that number - and why people are making the leap.
Whatever the case, a portable Linux installation on a flash drive can be used in place of a normal storage drive in your PC.