First, I did not claim that I have read anything about the version 2.7 . The tutorial that I have mentioned is written for version 2.6 .
Second, you can easily find the directory name from your own post https://discuss.pynq.io/t/stuck-at-extract-yocoto/4134/8 under the STEPS title as 3C .
Third, chmod 777 means that you press all the buttons to pass the level in a video game unconsciously.
Fourth, I guess my third answer also includes why it is improper without offering a reasonable explanation for that step.
Fifth, I have never seen anything about chown in your posts. Neither in this https://discuss.pynq.io/t/pynq-3-0-1-virtualbox-install-and-sd-build/4859 nor in this one https://discuss.pynq.io/t/stuck-at-extract-yocoto/4134/8 So, I cannot cooperate with you anymore …
