Minix3. 4 Free USB Operating Systems. Here is a list of 4 Best free USB operating systems that we have come across.
Not all of these are based on Linux, and one of these is non-Linux based, still free. A USB operating system or portable operating system is an operating system that can be installed on a USB drive, and fully functions from there. Such portable operating systems come handy if you like to travel a lot, but do not want to carry your laptop around. In that case, you can just plug-in your USB drive, and use your own operating system on any computer. All these USB operating systems are persistent, so they store the files that you create on the USB drive, and all those files are available when you turn on your USB operating system next time. Pinguy OS.