Which Khadas SBC do you use?
Which system do you use? Android, Ubuntu, OOWOW or others?
Which version of system do you use? Khadas official images, self built images, or others?
[VIM3_Ubuntu-gnome-focal_Linux-5.16-rc2_arm64_SD-USB_V1.0.9-211217] from official
Please describe your issue below:
`Use Etcher to install the system to SD card, through the keystroke mode can not start the SD card system, still enter the original system