unable to setup chroot environment
Hi i am trying to install ROS in raspbian using source. I want to setup chroot enviornment. I have followed the steps given at ros installation instruction But when i run this command sudo cp /usr/bin/qemu-arm-static /mnt/usr/bin/
i get and error cp: cannot create regular file `/mnt/usr/bin/': No such file or directory.
Please help me!..i am not able to understand the steps to be followed so it may be the case that i am stuck for very silly reasons.