Linux/RaspberryPi

chroot into a Raspberry Pi

Mount sequence

mount /dev/sdb3 /mnt
mount /dev/sdb2 /mnt/boot
mount /dev/sdb1 /mnt/boot/firmware
mount -o bind /proc /mnt/proc
mount -o bind /sys /mnt/sys
mount -o bind /dev /mnt/dev
mount -o bind /dev/pts /mnt/dev/pts
cp /usr/bin/qemu-arm-static /mnt/usr/bin
chroot /mnt

Doing stuff in chroot

Example: Fixing a broken apt install

dpkg --configure -a
apt -f install
exit

Unmount sequence

umount /mnt/dev/pts
umount /mnt/dev/
umount /mnt/sys
umount /mnt/proc
umount /mnt/boot/firmware
umount /mnt/boot/
umount /mnt

Gotchas

• kernel7.img - This is the kernel file for Raspberry Pi 2. Others use kernel.img