MacBook pro won't boot, how to solve the problem?

Question

macOS

When loading OS X, the power-up screen appears, the loading indicator above the apple reaches the end, and the poppy turns off.

Answer 1

In general, I solved the problem in this way: When starting the poppy, I pressed the cmd + s
key combination , then I wrote the command " /sbin/mount -uw / ", after which I entered the command " chmod 775 / " and the last command " exit " after it will need to wait some time until the laptop boots into the system