Early versions of the Raspberry Pi could only boot from SD cards, but newer ones can boot from any USB device, like an external drive or USB stick. Here's how.

Launch PEBakeryLauncher.exe from your WinPE folder. You'll likely see a Windows protected your PC screen. This happens ...

It also supports persistent storage, so you can save some essential data on your bootable USB drive instead of setting everything up from scratch whenever you boot your system – though you’ll ...

Not worried about my data as ZFS is pretty resilient to power loss, but it may have caused issues with the USB flash drive that FreeNAS boots from.

Check out any BIOS options for including USB devices in boot, and enabling legacy boot. USB devices made from strange images are quite rarely UEFI booting.