默认的树莓派4b是从SD卡中启动,但是鉴于SD卡的脆弱容易损坏,因此需要从USB启动。
- 升级EEPROM
github下载地址:https://github.com/raspberrypi/rpi-eeprom/releases
官方推荐方式,SD卡刷
- 升级bootloader
ubuntu和树莓派系统无需此步。
下载地址:https://github.com/raspberrypi/firmware/
下载后替换刻录后的U盘的boot目录
若不升级bootloader,会提示:
- 安装ubuntu20
直接将镜像刻录到u盘即可。
参考资料:
- https://www.quarkbook.com/?p=638
- https://www.raspberrypi.org/documentation/hardware/raspberrypi/booteeprom.md
- https://cloud-atlas.readthedocs.io/zh_CN/latest/arm/raspberry_pi/storage/usb_boot_ubuntu_pi_4.html
- https://github.com/raspberrypi/firmware/releases
- https://pa.ci/102.html
- https://blog.csdn.net/nanhantianyi/article/details/106542616
- https://cloud-atlas.readthedocs.io/zh_CN/latest/arm/raspberry_pi/storage/usb_boot_ubuntu_pi_4.html
- https://zhuanlan.zhihu.com/p/143865746