How To Boot A Raspberry Pi From A USB Drive
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.
Bybrad Hill Zoltan Kiraly Shutterstock Daniel Chetroni Shutterstock Pazargic Liviu Shutterstock Mishary Omar Shutterstock How To Boot
Source: slashgear.com