Just rebooted my Late 2009 iMac 27 and was greeted with a big update

[pshufd]

Something like 50 minutes to install. It's about 40% done. I wonder if this is the Zero-Day security fix that was pushed out in 11.3.

I'll report when I get my operating system back up and running.

That's the downside of a HDD - it takes forever to do anything that hits the disk a lot.

 

[chrfr]

Something like 50 minutes to install. It's about 40% done. I wonder if this is the Zero-Day security fix that was pushed out in 11.3.

If you're still running High Sierra, it's not a new security update. High Sierra has not received a security update in about 6 months and isn't supported by Apple anymore.

 

[pshufd]

It appears to be from last November. I guess I need to be careful how I use this thing. My Mojave systems did get updates though.

 

[chrfr]

It appears to be from last November. I guess I need to be careful how I use this thing. My Mojave systems did get updates though.

Yes, Mojave is still getting some security updates, as is Catalina.

 

[greenmeanie]

If Apple wasn't supporting High Sierra they would drop it completely.

 

[Jack Neill]

If Apple wasn't supporting High Sierra they would drop it completely.

They did, on November 12, 2020 with build 17G14042.

 

[pshufd]

I don't have a choice on operating systems. I am not sure whether or not I could run Linux or Windows 10 as I don't know if I can get a hold of Boot Camp that would support Windows 10 on this old system. I do actually like High Sierra quite a bit and I don't really do anything on this system that would be risky. I suppose I should run MalwareBytes on it regularly.