MP 1,1-5,1 New 5,1 - 2012 Nehalem with an empty 1tb hard drive

[Caligator]

I just bought a Mac Pro Tower 5,1 - 2012 Nedlahem with an empty 1tb hard drive. I currently have a USB with High Sierra install on it and it tells me I cannot install without a firmware update. I also have an early 2008 Mac Pro tower flashed to run el cap. Can I just pull the OS drive out of the 2008 with el cap and put in the 2012 5,1 and upgrade? Or can I buy a preinstalled High Sierra 3.5 HD and boot off that?

 

[tsialex]

Can I just pull the OS drive out of the 2008 with el cap and put in the 2012 5,1 and upgrade?

Yes.

Or can I buy a preinstalled High Sierra 3.5 HD and boot off that?

Won't solve the firmware upgrade issue.

Read what you have to do here:

MP5,1: What you have to do to upgrade to Mojave (BootROM upgrade instructions thread)

Please fully read this first post, you will probably find that you have one or more problems described into the various notes below. Mojave will only install if you have upgraded your BootROM to the current release and your Mac Pro have a Metal capable GPU*. If you are trying to install Mojave...

forums.macrumors.com

 

[Caligator]

Thanks tsialex! So what you are saying is I can pull my OS drive out of my late 2008 El Cap Mac Pro, place it in the Newer 2012, 5.1 mac pro, both have the same G Card Radeon 5770, and boot into el cap, then go the app store and just upgrade to High Sierra? And if I do, will it offer me the firmware update? Will it erase all my apps? Preferences? Thanks so much.

 

[tsialex]

Thanks tsialex! So what you are saying is I can pull my OS drive out of my late 2008 El Cap Mac Pro, place it in the Newer 2012, 5.1 mac pro, both have the same G Card Radeon 5770, and boot into el cap, then go the app store and just upgrade to High Sierra?

Yes.

And if I do, will it offer me the firmware update?

Yes, read the first post I've linked, there are several caveats upgrading MacPro5,1 firmware.

Will it erase all my apps?Preferences?

No.

 

[Caligator]