Yosemite on Late 2013 3.7ghz ME253LL/A

[Designbuilt]

Hi there, I would really appreciate a definitive answer. I have legacy software that needs to be run on Yosemite.

I am about to purchase a 3.7 quad core Mac ProME253LL/A (apple reseller, new) I'm not sure what it has been loaded with in regard to OS.

I understand that these machines were loaded initially with Mavericks.

I also understand that this machine will most probably be shipped with Sierra.

Is there anything that has been changed and or limited to stop me doing a clean install of Yosemite?

I have been told both:

1. I can run Yosemite by doing a clean install.

2. That it will not let me go backwards through the OS chain?

I would love to know if someone has done this specifically with the late 2013 Mac Pro ME253LL/A

 

[h9826790]

My understanding is that both firmware / hardware won't stop you running Yosemite. A clean install should be OK.

However, if you didn't own a copy of Yosemite, then it's hard to get a proper Yosemite installer.

 

[Designbuilt]

My understanding is that both firmware / hardware won't stop you running Yosemite. A clean install should be OK.

However, if you didn't own a copy of Yosemite, then it's hard to get a proper Yosemite installer.

I do have a Yosemite download that I can make a boot disk from, should this work?

 

[redheeler]

2. That it will not let me go backwards through the OS chain?

You can downgrade a Late 2013 all the way to Mavericks if you wish. Nothing stopping you if you have a bootable copy of the installer.

I do have a Yosemite download that I can make a boot disk from, should this work?

That should work, yes.