Thank you for your assist. Unable to update to Big Sur or Monterey.
Have more than enough disc space to accommodate updates. Perhaps my
iMac simply isn't compatible to the two latest operating system updates.
Any other suggestions?
Look to see if your iMac model is listed here. If it isn't, there is nothing you can do.
macOS Monterey is compatible with these computers - Apple Support
What is the model year of your iMac? Click on the Apple menu at the top left of your screen and then click on About This Mac to get that information.
When you respond, please reply to this post rather than creating a new question.
Nothing he can do to update to Monterey -- but may be able to update to other operating system versions (see the original question above).
SOFTWARE UPGRADE FOR PRE-2015 iMac
