No Entry Sign Macbook Pro Startup

Resolve boot issues showing prohibitory sign.
No entry sign macbook pro startup. If your mac doesn t start up all the way or needs you to do something during startup it might stop at one of these screens. This means one of two things. Circle with a line through it. Thanks for the a2a.
Managing a prohibitory sign at os x bootup. Learn what to do if your mac starts up to a circle with a line through it prohibitory symbol. Setup your mac mini in target disk mode so its seen as if it where an external drive and then connect it to your macbook pro. Model a1502 2 4 2 6 or 2 8 ghz dual core intel processor released october 2013.
Macbook pro 13 retina display late 2013. Either the system on the hard drive has been corrupted and it can t boot from it or the hard drive itself is damaged. That way you ll use your macbook pro s disk utility to prep the drive and install the os. You don t say how old your macbook pro is so that could also be a factor.
When starting your mac if you run into a prohibitory sign and the system will not boot there are a couple of things you can try to address the problem.