Announcement: Upgrade to macOS Mojave

With features like Dark Mode, Stacks, and four new built-in apps, macOS Mojave helps you get more out of every click. 
Find out how to upgrade to macOS Mojave > https://support.apple.com/macos/mojave

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

Question:

Question: High Sierra install I get the NO symbol

Trying to install HS on my iMac 27-inch, late 2015. After downloading and rebooting, it immediately goes to black screen a the no symbol (circle with line through it). after a minute it looks like its trying to boot into windows (series of dots moving in a circle).

I've restarted in safe mode, ran disk utility, no errors.

re-installed Sierra.

Tried to erase the drive, and re-install Sierra, then tied to install HS. Does same thing

Wiped the drive, removed the Boot Camp partition. re-installed Sierra, tried to install HS, same results.

Partitioned one of my external drives, installed Sierra on it, then downloaded and tried to in stall HS. Same results.


I'm running out of things to try. Any suggestions?

IMAC (RETINA 5K, 27-INCH, LATE 2015), macOS Sierra (10.12.6)

Posted on

Reply

Page content loaded

There are no replies.
User profile for user: djdipasquale

Question: High Sierra install I get the NO symbol