![]() In such cases, you don't need to re-flash the SD card using your computer, which requires you to remove the card from the Raspberry Pi 4. However, if the OS is not found or damaged, the Raspberry Pi 4 will load the Imager tool. When you flash the network boot firmware, the Raspberry Pi 4 will try booting from the SD card first. With a Raspberry Pi 3B+, it's even simpler: you should just be able to connect a USB SSD with an OS on it and it will boot up.Įnabling network boot on Raspberry Pi 4 is easy and comes in handy if the Raspberry Pi 4 fails to boot from the connected SD card for any reason, such as OS corruption. Just add the following line: program_usb_boot_mode=1 If you have a Pi 3, you can modify the /boot/config.txt file to allow Raspberry Pi 3 to boot from SSD or any other supported external media. However, if the Raspberry Pi 4 stops booting, look for these causes for a Raspberry Pi that won't boot and fix them. Thus, you can use Raspberry Pi to boot, run, or test other OS releases without needing to format or delete the main OS from the SD card that you use every day.Īlso, if you don't have an SD card, or have a smaller-capacity SD card but require more storage for your purpose, USB boot via a flash drive (such as a thumb drive or SSD) makes sense. If no bootable USB device is detected, the Pi checks for the SD card and boots the OS from that. ![]() There are certain situations where you would want to boot Raspberry Pi from a USB SSD instead of a microSD card.įor instance, when you enable Raspberry Pi 4 boot from SSD, the Pi checks for connected bootable USB devices first. Why Boot Raspberry Pi from SSD or Network?
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