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OS upgrade

hello. I have 27 inch Imac 2010.

running OS x Yosemite 10.10.5

RAM 16 GB

HD 763.04 GB free space available .

how can i upgrade my OS X so my Mac could run faster and get rid of the annoing rainbow spinning ball?

more info on my mac

Model Name: iMac

 Model Identifier: iMac11,3

 Processor Name: Intel Core i3

 Processor Speed: 3.2 GHz

 Number of Processors: 1

 Total Number of Cores: 2

 L2 Cache (per Core): 256 KB

 L3 Cache: 4 MB

 Memory: 16 GB

 Processor Interconnect Speed: 5.86 GT/s

 Boot ROM Version: IM112.0057.B03

 SMC Version (system): 1.59f2

 Serial Number (system): W8***DB6


[Personal Information Edited by Moderator]

Posted on Oct 11, 2021 2:33 PM

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Question marked as Best reply

Posted on Oct 12, 2021 1:40 AM

The Age of this computer will Govern what newer version of macOS it will Qualify to install. Use About this Mac from the Apple Icon on Desktop - the required Information will be there.


With the above information in-hand - follow this How to get old versions of macOS and verify what version this computer Qualifies to install.  For Best results use Safari to commence the download as Others may not work.


Safari will open a redirect and open the Apple Store to commence the download


The highest this computer can upgrade to is High Sierra


Make Time Machine Backup  is very useful and can be used to Revert to Previous Working macOS


Are there any AntiVirus, Disk Cleaner, Optimizers, Un-installers, etc installed which should be removed as per Developers Instructions. They are useless, unneeded, cause havoc and interfere with the normal operation of the OS and may even Corrupt the OS requiring a Reinstallation

1 reply
Question marked as Best reply

Oct 12, 2021 1:40 AM in response to BrightSpiritAZ

The Age of this computer will Govern what newer version of macOS it will Qualify to install. Use About this Mac from the Apple Icon on Desktop - the required Information will be there.


With the above information in-hand - follow this How to get old versions of macOS and verify what version this computer Qualifies to install.  For Best results use Safari to commence the download as Others may not work.


Safari will open a redirect and open the Apple Store to commence the download


The highest this computer can upgrade to is High Sierra


Make Time Machine Backup  is very useful and can be used to Revert to Previous Working macOS


Are there any AntiVirus, Disk Cleaner, Optimizers, Un-installers, etc installed which should be removed as per Developers Instructions. They are useless, unneeded, cause havoc and interfere with the normal operation of the OS and may even Corrupt the OS requiring a Reinstallation

OS upgrade

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