Always advised to keep my system updated yet my 2009 MAC that still works fine does not allow me to update operating system.
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Mike
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How Do I Protect My Older Mac That Doesn’t Allow Operating System Updates?
Comments: 2 Responses to “How Do I Protect My Older Mac That Doesn’t Allow Operating System Updates?”
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You need to simply keep it as updated as you can. Apple still provides security updates and XProtect (the built-in anti-virus for OS X) updates for older operating systems. These will appear as very small updates, not major ones. Some of the XProtect updates are even invisible.
Also try to keep your apps updated as best you can. Obviously if an app update requires a newer version of macOS, then you can't do it. But smaller updates or security fixes may become available.
Thank you very much!