/raspi_chroot

Primary LanguageShell

Initial setup

  1. Build docker image. Run docker build -t raspbian-cross ..

  2. Download raspbian image from unzip and save it as raspbian.img which is the image to be customized.

  3. Extend the image size for our installation. Run dd if=/dev/zero bs=1M count=1024 >> raspbian.img. It will extend the image 1GB.

  4. Make raspbian.img as loopback device. Run losetup -fP raspbian.img.

  5. Extend partition. Run gparted /dev/loop0 (The name loop0 may be different. Check by runnng losetup -l).

Setup for customizing

  1. (If didn't yet): Make raspbian.img as loopback device. Run losetup -fP raspbian.img.
  2. Mount loop0p2. Run mount /dev/loop0p2 /mnt.
  3. Login image via docker. Run docker run --rm -it --privileged -v /mnt:/raspbian raspbian-cross:latest.
  4. (The first time only): Copy qeu-arm-static binary to raspbian. Run cp /usr/bin/qemu-arm-static /raspbian/usr/bin/
  5. Chroot. Run chroot /raspbian /bin/bash
  6. You can now modify the image. Modify.

Write customized image to the SD card

Run dd bs=1m if=raspbian.img of=/dev/<SD card>