I am trying to build my own custom Raspberry Pi 4 image. I have successfully built the kernel and busybox. I have setup my SD Card into 2 partitions:


I used a USB to TTL cable to view the kernel messages. The kernel boots successfully but I can't access the console. When I hit enter to access the console, nothing happens.

boot folder rootfs folder kernel messages

I followed this web-page: Build a Raspberry Pi Linux System the Hard Way

Could you tell me what's wrong?

  • Try cycling through the VT's with ctrl-alt-F[1-6].
    – goldilocks
    Jan 30, 2023 at 21:32
  • I get a prompt: my_home_directory_name:login then a prompt to enter apassword.
    – kakashi07
    Jan 30, 2023 at 21:48
  • And what would you like instead? The reason it seems not to work on tty1 is because kernel messages are being directed there.
    – goldilocks
    Jan 30, 2023 at 21:58
  • But i couldn't login. could you please explain further ?
    – kakashi07
    Jan 30, 2023 at 22:13

1 Answer 1


i changed the permission to access the serail device to: sudo chmod 0666 /dev/ttyUSB0

also added myself to a special group sudo usermod -a -G dialout YOUR_USER_NAME

and then in the minicom settings-> serial device i changed hardware Flow control to no

Now I can access the console.

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