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

macOS could not be installed on your computer

"an error as occurred installing macOS. To use Apple Diagnostics to check your Mac hardware, shutdown, press the power button, and immediately hold 'D' key until diagnostics begins. Quit the installer to restart your computer and try again."


This is the message I get when attempting a clean install of High Sierra from the bootable USB drive. I have formatted the HD and started clean install. It loads up, screen flashes black, and start installing. At "11 minutes remaining" error message appears.


I tried holding 'D' key, but it always went to Internet recovery.


Note, that I had a clean Sierra install on the computer (I was unable to download full High Sierra image otherwise) and all worked well using the same procedure: format HD, install.


One thing that might be important: It is not clear to me if I should repartition the disk using the disk utility ... if so, steps to do that in High Sierra would be appreciated.


Computer: late 2012 Mac Book Air, 256GB SSD drive, and 8GB memory (both standard). Hardware requitrments seems same as for Sierra which worked fine.


Suggestions?


Thank you,

Radek

Edit: After I restart the computer after the error message holding "opt" key I still see my "Install macOS High Sierra" USB and "mac OS installer" (later had internal HD icon).

MacBook Air, macOS High Sierra (10.13.2), Does not install / troubleshooting

Posted on Dec 15, 2017 1:14 PM

Reply
Question marked as Best reply

Posted on Dec 15, 2017 11:19 PM

Hi,


Re-creating the bootable drive seemed to resolve the issue. IIRC installation screens seemed a bit different, but everything went well.


Two things that might have helped:


1. I ran dd to zero internal SSD (entire drive was zeroed wiping EVERYTHING including recovery partition. When I booted from USB drive, the internal disk did not even show up. Once the pre-install ran (I guess SDD got formatted) it appeared as a destination for installation.


2. As I was creating the bootable USB I was wondering if I have used the --applicationpath switch ... I might have forgotten (if that makes any difference ... I saw both on the net).


Thank you all for comments ...


Cheers,

Radek

7 replies

There are no replies.

macOS could not be installed on your computer

Welcome to Apple Support Community
A forum where Apple customers help each other with their products. Get started with your Apple ID.