cannot Mac OS Big Sur 11.5.1 update

User wrote " my other gear such as Mac mini or iPhone were without any problem to up-date version 11.5 " Yes Mac mini can run Big Sur but iPhone runs a totally different OS called iOS and the latest version is 14.7.1 and not macOS 11.5 which is only for Apple Computers.

Immediate item of Major Concern and there are more but that is secondary to the Biggest Issue - This computer is running critically low on free hard drive space.

The above must be solved . That and the fact this is the smaller Internal Drive at 128 GB. It will be a challenge to get enough Empty Space to upgrade to Big Sur 11.5.1

What is “Other” storage on a Mac, and how can I clean it out?

Free up storage space on your Mac

OmniDiskSweeper - Safe and Trusted Developer

Etrecheck is a diagnostic utility by a respected member of this community. You get it from its website.

You run it and it will produce a report. When it finishes, click Share Report->Copy Report.

Then start a reply here, click the “additional text” button below your message and Paste.

Obviously there is something amiss with this mac.

Please run Etrecheck and post its full report here.

Use the “additional text” button and paste the report into the text box.

Welcome ;-)