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How to boot Raspberry Pi 4/400 from a USB SSD or flash drive

Editor’s note (7/24/2021): We have updated this tutorial to include how to start your Raspberry Pi 400 From USB.

by default, raspberry pie Start and store all its programs on a microSD memory card, the maximum theoretical bandwidth of the memory card is 50 MBps Raspberry Pi 4 And only 25 MBps on the previous model.In real life, even The best microSD card for Raspberry Pi The sequential write speed does not exceed about 38 MBps. Using an external SSD as your primary storage drive can speed things up significantly, and with a few commands and simple firmware updates, you can do this.

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