I would like to have an Ubuntu USB I can carry around with me at all times just in case I need/want to use Ubuntu on a computer for some reason. (I find it very useful for a lot of things. Gparted and the dd command I often find useful, for example.)
I tried installing Ubuntu to a USB stick directly, However I found that despite it being a USB 3.0 drive it wasn't fast enough to run a full OS from. Performance was very poor.
So, now I am trying to use a persistent USB drive instead. However, I am unclear how the persistence works and as a result what its limitations are.
How far does persistence extend? I presume it will save settings between boots at the least, but will it save files? If I install something with apt-get will that persist? It seems that when I boot on a MacBook the Live USB lacks the drivers required for WiFi, will drivers persist if I install them?