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Cannot upgrade past High Sierra

I have been trying to update my iMac from High Sierra, for the longest time. Finally came to the time when work is quiet so I have the time. I want to save the data on my machine, so dont really want to do a clean install. I have tried recovery mode but alas it is still stuck on the same screen, see attached screenshot. Has anyone else experienced this and is there a fix, many thanks in advance for your help

iMac Line (2012 and Later)

Posted on Jan 18, 2020 2:21 AM

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9 replies

Feb 13, 2020 10:31 AM in response to Sharon_7512

Can you explain further about the disappearing?


EtreCheck is a simple little app to display the important details of your system configuration and allow you to copy that information to the Clipboard. It is meant to be used with Apple Support Communities to help people help you with your Mac.

http://www.etresoft.com/etrecheck


Pastebin is a good place to paste the whole report...

https://pastebin.com/


Or use the paperclip at the bottom of a Reply to attach the full report here. :)


Workable but harder for me to work with...the Note tool on the bottom of this editor's toolbar, as shown in the image, to copy and paste the output from EtreCheck.

Cannot upgrade past High Sierra

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