I am using a Mac Book Pro with El Capitan installed. Yesterterday I was trying to change a file permission and I made a very big mistake.
This is the command I issued
sudo chmod -R 777 /
After issuing the command the system began to give many system errors. I restarted my laptop and now it keeps stack at the apple logo with the progress bar.
I have been able to go to the single user mode, buh I dnt know how to get the laptop to boot normally.
Anybody with an idea on this can help me. Thanks