IMac won't software update

[jockeyeba]

iMac Big Sur 11.4.......won't update-just spins......doesn't matter how long I leave it.....computer is getting slow when I turn it on

 

[TonyAguila]

iMac Big Sur 11.4.......won't update-just spins......doesn't matter how long I leave it.....computer is getting slow when I turn it on

What version of macOS are you presently running? What is your Mac’s Model Identifier? (Go to  -> About This Mac -> System Report… and under Hardware Overview, your Model Identifier will be listed. For example, mine is Mac13,1.)

 

[jockeyeba]

Model Name: iMac
Model Identifier: iMac19,2
Processor Name: 6-Core Intel Core i5
Processor Speed: 3 GHz
Number of Processors: 1
Total Number of Cores: 6
L2 Cache (per Core): 256 KB
L3 Cache: 9 MB
Memory: 8 GB
System Firmware Version: 1731.100.125.0.0
SMC Version (system): 2.47f3

Hardware UUID: 8C5301BC-59B4-5C9F-8280-C53C420186A8
Provisioning UDID: 8C5301BC-59B4-5C9F-8280-C53C420186A8

 

[TonyAguila]

Model Name: iMac
Model Identifier: iMac19,2
Processor Name: 6-Core Intel Core i5
Processor Speed: 3 GHz
Number of Processors: 1
Total Number of Cores: 6
L2 Cache (per Core): 256 KB
L3 Cache: 9 MB
Memory: 8 GB
System Firmware Version: 1731.100.125.0.0
SMC Version (system): 2.47f3

Hardware UUID: 8C5301BC-59B4-5C9F-8280-C53C420186A8
Provisioning UDID: 8C5301BC-59B4-5C9F-8280-C53C420186A8

Wonderful! Are you aware of the fact that your 2019 iMac is capable of running macOS Monterey? What method of software update are you utilizing? Depending on the state that the iMac was in during the upgrade, your system memory might not have the capacity to finish the task. If you haven’t yet, see if you can do the upgrade via Recovery. The only caveat is that Recovery will probably only offer Monterey for the installation.

If the problem persists you can try to reset the SMC and zap the parameter RAM (PRAM) before proceeding.

 

[jockeyeba]

have no idea what "Recovery" is?

 

[TonyAguila]

have no idea what "Recovery" is?

Recovery mode is basically booting up your Mac from hardware and built-in memory, independent of your boot up drive, so that you can perform operations like Disk Utility and software installation and updates independent of the status and condition of your startup drive.

Anyway, without risking anything, I suggest you try it just to get a feel for what it is like. Once you are in Recovery, just look through the different parts of the menu just to familiarize yourself with the process. One thing you will need is internet connection if you are going to download files. As I said, you don’t have to erase anything with Disk Utility, or install updates, if you don’t feel at ease with it.

So, in order to enter Recovery, shut down or restart the Mac and immediately hold down the keys, command-R. Keep holding the keys down until the Recovery screen comes up.