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Reluctantly upgrading 2015 MBP to Catalina

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planteater

Cancelled
Original poster
Feb 11, 2020
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1,681
My 2015 MBP runs perfect on Mojave. Zero issues or bugs. I love it and really don't want to chance an upgrade, but for one reason it looks like I need to. I want to upgrade my VMware Fusion from 11 to 12, which requires Catalina.

How is Catalina doing these days for stability? Any specific issues on 2015 MBP's to be aware of? I haven't really been staying current with threads on Catalina as I've previously had no need or intention of upgrading to it.

My approach is to update a copy of my OS on an external SSD as a test, cloned using CCC. If I upgrade that external drive, would the install modify the boot area of the drive in MBP? I guess I'm looking for assurance that I can just discard the the cloned external copy if this goes south, and have my primary internal drive 100 percent Mojave and intact. I'll also have other CCC backups of my Mojave drive at the ready.

Any tips or information that you can point me to, or that I need to be aware of?
 
I also have a perfectly running 2015 MBP with Mojave.

I will be waiting with the Catalina Upgrade until November 2021 when security updates end for Mojave.

The only problem I'm currently watching is this:

Maybe keep an extra Time Machine backup (with no exclusions on a HFS+ HDD) that you can roll back on a fresh install of Mojave even if your described procedure with CCC backups goes south.

Let us know how your upgrade works out.
 
I'm running Catalina on a mid-2012 MacBook Pro with 16GB of RAM and a 1TB Western Digital SSD. It seems to run just fine.

My only issue is that I continue to receive warnings about legacy extensions that won't run on the next version of the operating system, but the next version of the operating system won't run on my machine.
 
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similar. running mid 2012 macbook pro, 16Gb ram, Crucial SSD, Catalina runs sweet. No issues.
 
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planteater said:
My 2015 MBP runs perfect on Mojave. Zero issues or bugs. I love it and really don't want to chance an upgrade, but for one reason it looks like I need to. I want to upgrade my VMware Fusion from 11 to 12, which requires Catalina.
Click to expand...
Why do you need to upgrade Fusion?
 
planteater said:
I'd like to run a VM with Big Sur on it. That, and I know I need to go to it sooner or later for updates.
Click to expand...
Did VMWare do something to stop Fusion running Big Sur VM's? I haven't and won't bother trying, but before the release of Big Sur, I could swear there were people running it in VMs.
 
Last edited:
posguy99 said:
Did VMWare do something to stop Fusion running Big Sur VM's? I haven't and won't bother trying, but before the release of Big Sure, I could swear there were people running it in VMs.
Click to expand...
I'm on 11.5.7 and was under the impression that Big Sur guest support was in version 12, only. But I may have been wrong. It appears that version 12 offers Big Sur host support. I don't need that at this point. I'll try installing Big Sur on version 11.5.7 on my Mojave machine and see how it works out.
 
planteater said:
I'm on 11.5.7 and was under the impression that Big Sur guest support was in version 12, only. But I may have been wrong. It appears that version 12 offers Big Sur host support. I don't need that at this point. I'll try installing Big Sur on version 11.5.7 on my Mojave machine and see how it works out.
Click to expand...
Yeah, you have to have v12 if you want Big Sur to be the host OS, only v12 implements using Apple's virtualization layer.
 
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