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.

Raspberry Pi 5 supports booting not only from microSD cards but also from USB memory, external SSD, etc., so I have summarized the steps for USB booting. Also, if you are using a power adapter ...

3. Preparing the Raspberry Pi Compute Module 5 Next, disable the 'process of booting the OS from eMMC flash memory' so that you can write the OS to the Raspberry Pi Compute Module 5.

The solution? Make a Raspberry Pi Zero into a virtual USB mass storage device using the Mass Storage Gadget (MSG) driver in the Linux kernel.