MP 1,1-5,1 High Sierra to Mojave?

[GlynH]

Hi there,

I have searched and read many threads but am more confused now than I was when I started as I see many hundreds of posts & methods varying from 'Yes you can' to 'No it doesn't work' and just about everything inbetween.

Not wishing to start a new thread but wary of posting in the huge Mojave Boot ROM thread where it may get lost, trodden underfoot or could even be considered off-topic may I ask what I hope is a simple question please?

On a genuine 2010 cMP 5,1 running High Sierra 10.13.6 from an 970 EVO Plus M.2 blade with an 860 EVO SSD in a drive slot with a Quadro NVS 510 2GB on a machine already running Boot ROM 144.0.0.0.0 and using OpenCore is it possible to install Mojave directly from the App Store prompt that greets me every time I logon or do I have to resort to some black magic to install Mojave?

Talking of OpenCore how can I check which version is installed as typing nvram 4D1FDA02-38C7-4A6A-9CC6-4BCCA8B30102Opencore-version into a terminal window returns Error getting variable - '4D1FDA02-38C7-4A6A-9CC6-4BCCA8B30102Opencore-version': (iokit/common) data was not found)?

At some point Apple has kindly already downloaded Install macOS Mojave into Applications for me so it is possible to install directly from there and will the expected behaviour be to ask me which disk I want to install to prior to installing and then delete itself after install as seems to have happened with macOS upgrades in the past?

And is it recommended to install Mojave on a separate SSD or is it possible to install to the existing High Sierra M.2 and select the boot drive as normal depending which OS I want bearing in mind all is working well and conscious that this is an unsupported computer playing with an old OS? Logic dictates it should be safer installing to a separate disk as if it all goes wrong I can just pull the disk or erase it in Disk Utility or something?

I am just about to physically install the newer Apple Broadcom BCM94360CD card from OSXWiFi to give me extended Continuity/Handoff support to the cMP to work better with my 2013 MacBook Air and upgraded 2011 iMac also using the OSXWiFi solution.

At some point I would like to install & run Windows 10 but as that looks to be a whole world of hurt that will be subject to more research and maybe a question from me another day!

Are there any other gotcha's I need to be aware of when installing Mojave please?

Thanks & kind regards,
-=Glyn=-

 

[sfalatko]

Hi there,

I have searched and read many threads but am more confused now than I was when I started as I see many hundreds of posts & methods varying from 'Yes you can' to 'No it doesn't work' and just about everything inbetween.

Not wishing to start a new thread but wary of posting in the huge Mojave Boot ROM thread where it may get lost, trodden underfoot or could even be considered off-topic may I ask what I hope is a simple question please?

On a genuine 2010 cMP 5,1 running High Sierra 10.13.6 from an 970 EVO Plus M.2 blade with an 860 EVO SSD in a drive slot with a Quadro NVS 510 2GB on a machine already running Boot ROM 144.0.0.0.0 and using OpenCore is it possible to install Mojave directly from the App Store prompt that greets me every time I logon or do I have to resort to some black magic to install Mojave?

Talking of OpenCore how can I check which version is installed as typing nvram 4D1FDA02-38C7-4A6A-9CC6-4BCCA8B30102Opencore-version into a terminal window returns Error getting variable - '4D1FDA02-38C7-4A6A-9CC6-4BCCA8B30102Opencore-version': (iokit/common) data was not found)?

At some point Apple has kindly already downloaded Install macOS Mojave into Applications for me so it is possible to install directly from there and will the expected behaviour be to ask me which disk I want to install to prior to installing and then delete itself after install as seems to have happened with macOS upgrades in the past?

And is it recommended to install Mojave on a separate SSD or is it possible to install to the existing High Sierra M.2 and select the boot drive as normal depending which OS I want bearing in mind all is working well and conscious that this is an unsupported computer playing with an old OS? Logic dictates it should be safer installing to a separate disk as if it all goes wrong I can just pull the disk or erase it in Disk Utility or something?

I am just about to physically install the newer Apple Broadcom BCM94360CD card from OSXWiFi to give me extended Continuity/Handoff support to the cMP to work better with my 2013 MacBook Air and upgraded 2011 iMac also using the OSXWiFi solution.

At some point I would like to install & run Windows 10 but as that looks to be a whole world of hurt that will be subject to more research and maybe a question from me another day!

Are there any other gotcha's I need to be aware of when installing Mojave please?

Thanks & kind regards,
-=Glyn=-

If your bootrom is already at 144 and you have a metal GPU you should be fine to install Mojave directly.

Whether you preserve a High Sierra install is up to you - as Mojave is supported officially on the cMP unless you have some software that won't run on Mojave I wouldn't keep a High Sierra install. I would however create a clone as a safety precaution before installing Mojave so that you can roll back if you have an issue.

To get continuity to work you will need to do some patching even after updating your wifi card in Mojave. See this thread - 802.11ac, BT 4.0 and Continuity & Handoff are working on Mac Pro 2010. See this post in the thread - https://forums.macrumors.com/thread...-pro-2010-keep-updating.1748061/post-28010908 for the terminal commands to manually patch.