MacPro1,1 w/Mavericks and El Cap?

[flang]

is it possible to have a dual boot MacPro1,1 with Mavs and El Cap?
Reason being, I need to run ProTools 10HD on Mavs (due to cost of plug upgrades) and Media Composer 1st only runs on El Cap or better.

 

[Juicy Box]

I don't see why not. Just curious, why do you think it wouldn't work?

The only issue would be that you cannot run the lastest security update. I was reading about it breaking the OS on the 1,1.

There currently is no work around.

 

[flang]

aren't there 2 different EFI for Mavs and El Cap? That was my only thought. Perhaps there is only one.?

 

[jbarley]

aren't there 2 different EFI for Mavs and El Cap? That was my only thought. Perhaps there is only one.?

Exactly like my MacPro1,1 is set up, works like a charm.
Oh, the other Volume "El-Cap-2018" is the one with the patched 2018-001 security update, and yes it does work alright.

 

[flang]

"Exactly like my MacPro1,1 is set up, works like a charm."
thanks, that's what I wanted to see. Must be cold up there.

 

[jbarley]

thanks, that's what I wanted to see. Must be cold up there.

Actually it's been quite mild, daytime temperatures in the low to mid 50's.
Really makes for a wet time with the "igloo" ceiling dripping all over.

 

[flang]

here, allow me to send you some f'n cold then. it was 19º this am. heat wave now, 25º

 

[jbarley]

here, allow me to send you some f'n cold then. it was 19º this am. heat wave now, 25º

Gotta love that "global warming"