iMac (21.5-inch, Mid 2010) not installing os

I have iMac (21.5-inch, Mid 2010) but the os is no where to be seen and I need to use it as a monitor I have tried re installing os but my MacBook is on Mac OS senoma so I have no idea what to do

and when I turn it on it goes straight to the Mac OS utilities and when I try reinstall the os on the utilities page it says It can not contact the server even though it is connected to wifi


Earlier displays & monitors

Posted on May 21, 2024 10:28 AM

Reply
3 replies

May 21, 2024 11:36 AM in response to raf1719

 Start up from macOS Recovery

Option-⌘-R

Upgrade to the latest macOS compatible with your Mac.


In Disk Utility>View, select Show all Devices, highlight the top left entry.


Run Disk First Aid on all items in the left panel, from top down.


APFS won't work for Sierra or earlier, Sierra or earlier needs MacOS Extended Journaled. High Sierra won't work for APFS on earlier Macs.




If all else fails...

https://mrmacintosh.com/how-to-fix-the-recovery-server-could-not-be-contacted-error-high-sierra-recovery-is-still-online-but-broken/


High Sierra “The Recovery Server Could No… - Apple Community


Use http:// instead of https://

https://www.youtube.com/watch?v=ouNQS36dIBw&t=95s

The formula for caos: APFS+macOS High+EFI… - Apple Community


How to recover a Deleted Hard Drive durin… - Apple Community


iMac (21.5-inch, Mid 2010) not installing os

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