If it ends up being possible to install Catalina on a cMP, would you do so?

[s.m.t.]

Most likely will not be putting Catalina on my 4,1 flashed to 5,1. I still use a couple 32-bit apps. I don’t see a single feature in Catalina that I need or want. Lastly, Mojave is fully supported on this Mac, and I don’t feel like dealing with any unexpected problems on a daily production machine.

How do you determine if an app is 32bit?

 

[Slash-2CPU]

How do you determine if an app is 32bit?

Activity Monitor can show 32/64 bit when the app is running. Also, Mojave should be giving you pop ups about 32-bit apps being incompatible with future versions of Mac OS occasionally when you launch them.

 

[tyche]

How do you determine if an app is 32bit?

Go to About This Mac, choose System Report. Then select Applications. Wait, this can take a min or so. You get a list of all applications on your system. Sort by 64 bit column.

 

[fatespawn]

I have a question---are 32 bit applications security risks? I'm hesitant about bumping my dad to Catalina, as he's 82 years old and is very comfortable with 2008 office. Updating will kill that app and I don't want to become tech support for Office 365 plus...(let alone the cost, but the real issue is the time to explain the new UI...).

I would never consider upgrading my 77 year old mother's High Sierra installation if it meant I had to spend MORE time as tech support than I do now. Does the computer not do what your father wants it to do? I imagine he could care less about operating systems. I think the security concern is an infinitely distant second place to usability.

 

[flyproductions]

My 5,1 is stuck on High Sierra because of the damage Apple did to MacOS Server, and the lack of Nvidia GPU drivers. Going to remain that way for the foreseeable future.

...and i add lacking 32bit-support and a messed up finder to this.