macOS High Sierra

[Hal Beery]

We just obtained a new iMac with pre-installed OS 10.13.4. and purchased Resolve Studio 15.
Resolve is crashing constantly. (i.e. more than 20 times a day).
I am the DP, and just returned from out of town to discover all this, and trying to help the new editor.
1. Is it possible to install a previously “proven” OS on this new iMac?
2. What “preferences” should be checked?

Thanks in advance for your help.

Hal Beery

[Robert Withers]

I’m a duffer but I’ve been running Resolve 14 on OS 10.13.5 with no crashes. I thought R 15 was still in beta and not for sale.
There are lots of instructions online about how to install pre-High Sierra OS if you have a copy of the OS to install.

Robert Withers

Independent/personal/avant-garde cinema, New York City

[Oliver Peters]

I presume you have compared your iMac’s specs to Resolve’s required specs. I have been running Resolve all along on several machines. Both the App Store version of Resolve 14 and the beta version of Resolve Studio 15. No issues, so I’m not sure what the problem is. For me, Resolve just tends to work. You might check the Resolve Preferences – System Configuration and see what the GPU settings are. It should see 1 GPU only and give you options like OpenCL or Metal. You might want to change them from one setting to another and see if that helps.

– Oliver

Oliver Peters – oliverpeters.com

[Hal Beery]

Thanks for the response,
My concern was whether a previous OS would successfuly operate the new iMac (purchased two months ago).

I’ve tried installing older OS on macbook pro’s and had difficulty. Is the iMac more forgiving?

tnx
Hal

[Hal Beery]

Thanks Oliver!

Are any of your machines running High Sierra?

Hal

[Oliver Peters]

[Hal Beery] “Are any of your machines running High Sierra? “

All are currently on macOS 10.13.6. That’s the most current version.

– Oliver

Oliver Peters – oliverpeters.com

[Oliver Peters]

[Hal Beery] “My concern was whether a previous OS would successfuly operate the new iMac (purchased two months ago”

Usually note. You can try it, but I doubt it will work.

– Oliver

Oliver Peters – oliverpeters.com

[John Rofrano]

[Hal Beery] “My concern was whether a previous OS would successfuly operate the new iMac (purchased two months ago).”

It depends on how much new hardware is in the new iMac. Usually, new OS’s have drivers for the new hardware whereas older OS’s will not. If, for example, your iMac uses a new GPU for which there are no drivers in the older OS, you will get poorer performance.

The good news is that it’s very easy to try this out without affecting your existing iMac. 😉

Simply plug in an external USB or Thunderbolt drive and format it for Mac OS Extended (Journaled). Then start the installation for the older macOS that you want to use and point it to this disk as the target. You can install any version of macOS that you want on the external disk. Finally, reboot your Mac and hold down the Option key when you hear the chime and after a while you should see all of the available boot disks displayed on your screen. Just select the external drive and your iMac will boot that OS. Then see if everything works.

~jr

http://www.johnrofrano.com
http://www.vasstsoftware.com