You can make a difference in the Apple Support Community!

When you sign up with your Apple Account, you can provide valuable feedback to other community members by upvoting helpful replies and User Tips.

Looks like no one’s replied in a while. To start the conversation again, simply ask a new question.

Level 1

5 points

I have a black screen and a prohibitory sign and then no disk is displayed to reinstall the OS

iMac 27″, OS X 10.11

Posted on Sep 4, 2020 6:12 AM

Top-ranking reply

Level 1

131 points

Posted on Sep 4, 2020 6:19 AM

Hi,

Here is an explanation of what does this sign means.

There is also a guide how to get back to order with your MacOS.

View in context

Similar questions