I have a FreeNAS that has generally been working ok. I was messing around with the hardware that led to instability from FreeNAS's point of view. Specifically, I did a fan mod on one of the redundant ...
Your USB drive should be able to store and boot as many operating systems as its storage capacity allows.
My freenas eats USB sticks, is there any solid cheap usb sticks? I´ve considered SLC usb sticks and in worst case a small SSD. Boot from disk is my second hand choice, there is only room for one more ...