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The first post of this thread is a WikiPost and can be edited by anyone with the appropiate permissions. Your edits will be public.
It doesn't matter. OpenCore is not tied to any OS.
Could I go about reverting from 0.7.0 to 0.6.8 by uninstalling my current OpenCore and then reinstalling the older version?

EDIT: Nevermind. Removing the second copy of OpenCore fixed the issue with TB3 hot plug. Now we’re cooking with gas! Woohoo!
 
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Hi All, I have a Mac Pro 4,1 flashed over to a 5,1. Installed a Sabrent NVMe drive and got Catalina on it with OC from the create.Pro guys. My Star USB card doesn't work now - Probably due to OC on it now, but everything else seems to work.

I'm looking to try OCLP for a Big Sur installation. I have several 2.5" SSDs, so I can get a sled and try it that way.

Question: Should I try to bypass 11.3 and install 11.4? Does anyone have 11.4 working correctly with OCLP? Or, should I just reinstall Catalina using OCLP? I figure my mac pro has about 2 years left on Catalina according to Apple support cycles.
 
Question: Should I try to bypass 11.3 and install 11.4?
Like is clearly stated on the first post of the thread, Big Sur only works reliably with a MacPro5,1 up to 11.2.3.

If/when a workaround is found the first post will be updated, use 11.2.3 or Catalina until it.
Does anyone have 11.4 working correctly with OCLP?
With a upgraded Mac Pro, OCLP is just a easy way to install OpenCore and won't change at all the Big Sur reliability issues with a MacPro5,1.

Read this post below:


Or, should I just reinstall Catalina using OCLP? I figure my mac pro has about 2 years left on Catalina according to Apple support cycles.
OCLP is focused only with Big Sur, while the first post of this thread is applicable to Mojave/Catalina/BigSur and with some tweaks on the first post config you can boot successfully most previous macOS releases supported on a MacPro5,1.
 
Like is clearly stated on the first post of the thread, Big Sur only works reliably with a MacPro5,1 up to 11.2.3.

If/when a workaround is found the first post will be updated, use 11.2.3 or Catalina until it.

With a upgraded Mac Pro, OCLP is just a easy way to install OpenCore and won't change at all the Big Sur reliability issues with a MacPro5,1.

Read this post below:



OCLP is focused only with Big Sur, while the first post of this thread is applicable to Mojave/Catalina/BigSur and with some tweaks on the first post config you can boot successfully most previous macOS releases supported on a MacPro5,1.
Thanks for all the info. I might try the OCLP for Big Sur and see how it comes out. I’d like to consolidate into one machine for a daily driver. My Ryzentosh is great but no sleep and photoshop issues are forcing me out of that pocket.
 
Thanks for all the info. I might try the OCLP for Big Sur and see how it comes out. I’d like to consolidate into one machine for a daily driver. My Ryzentosh is great but no sleep and photoshop issues are forcing me out of that pocket.
If this is your production mac, please read trough the link @tsialex gave you, before you do. There are some worst case scenarios you need to know about.
 
Hi everyone. I've installed OC 0.7 on a cMP5,1 and installed Big Sur. Great job to everyone involved BTW. I have one minor issue. None of my USB ports work. There's power, but it doesn't detect if anything is connected. I've tried installing USBInjectAll.kext and USB-Mapper.kext but whenever I plug in my wired mouse, it won't even recognise it. I'm pretty sure it's loading OC 0.7 because I see the boot screen and NightShift is working. Has anyone else had the same issue and how did you fix it. I tried looking on the thread for issues similar, but couldn't see anything. Any help is much appreciated.
 
Hi everyone. I've installed OC 0.7 on a cMP5,1 and installed Big Sur. Great job to everyone involved BTW. I have one minor issue. None of my USB ports work. There's power, but it doesn't detect if anything is connected. I've tried installing USBInjectAll.kext and USB-Mapper.kext but whenever I plug in my wired mouse, it won't even recognise it. I'm pretty sure it's loading OC 0.7 because I see the boot screen and NightShift is working. Has anyone else had the same issue and how did you fix it. I tried looking on the thread for issues similar, but couldn't see anything. Any help is much appreciated.
Big Sur 11.2.3?
 

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There is a extremely simple way (simple here as in not need to know how the NVRAM works/check free space indicators/validate checksums and etc) to check if the garbage collection failed and the need to reflash with the clean dump:

  • Dump the BootROM with ROMTool

Hello, I tried to verify my NVRAM Garbage Collector, but i'm facing multiples chip ID's...
I have to choose a specific one?
Thanks
 

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Hello, I tried to verify my NVRAM Garbage Collector, but i'm facing multiples chip ID's...
I have to choose a specific one?
Thanks
You can read the chip type by inspecting the chip visually.

but it dont depends with reading.

you can use my dumper what detects the type by trying and with the knowledge what type is in what machine. Also it can calculate free space and some other data points.

 
A normal working single CPU Mac Pro with 3 DIMMs have the Free Space Full Size usually around 45000 to 40000 - this is for a healthy working dump
Mine is like attached at 27095...
So it's not good, as it should be 45000 - 40000, right?
PM sent.


No, see why:

  • First you can't re-flash the same firmware version or downgrade it. efiflasher checks the EFI version before doing anything.
  • Second, the generic image doesn't even have a NVRAM volume, just FFs where the NVRAM is stored. Apple efiflasher completely ignores the NVRAM area of the BootROM image and keep it as is inside the SPI flash memory.

Btw, not just the NVRAM area, but the boot loader, the Firmware Recuperation module and the BootBlock. Just the EFI component of the BootROM image is ever upgraded.
Is it possible to help me too, to flash with a clean bootRom (and do like tsialex later, every 3 months, flashing with a clean bootRom) ?
Thanks in advance.
 

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You can read the chip type by inspecting the chip visually.

but it dont depends with reading.

you can use my dumper what detects the type by trying and with the knowledge what type is in what machine. Also it can calculate free space and some other data points.

Hi! Thank you for your great tool, i am concern about the free VVS space, my free space was 51000 but after boot to windows downs to 33000 and then after to reboot to windows and return to MacOs was down dramatically to 5200 this is a normal behavior?
 
Hi! Thank you for your great tool, i am concern about the free VVS space, my free space was 51000 but after boot to windows downs to 33000 and then after to reboot to windows and return to MacOs was down dramatically to 5200 this is a normal behavior?

When your Nvram is healthy, it should run into garbage collection with the next one or two reboots.


see 1st picture is a full 1st VSS Stream,


3 Bildschirmfoto 2021-05-02 um 15.19.23.png


next boot, without doing anything special, just rebooting, the garbage collection has run, Memory Configs reseted with plenty of free space:


4 Bildschirmfoto 2021-05-02 um 15.22.54.png



here is a full circle from full to empty: https://forums.macrumors.com/thread...s.2289056/page-21?post=29845724#post-29845724


at least with Big Sur used space is increased about 5000 Bytes with every Boot. Also 2 Memory Configs are added with every boot on my Single Mac Pro 5.1

Until it is almost full, then it got flushed, replaced somehow with the content of the 2nd VSS Stream.

The free space what my tool counts is not 100% accurate, but enough to see what's going on.

If the 1st VSS Stream is damaged in any way (by duplicated variables, Windows certificates, etc) this garbage collection can go nuts and the Stream can exceed its limits. With bad luck overwriting the discriptors in the 3rd stream.

It's always a good idea to have a prestine, clean Firmware. I do always clean and rebuilt the Firmware on the machines I am working on.



@tsialex is the mastermind in Mac Pro Firmware and can fix and rebuilt firmwares in the most perfect way.

all credits go to him, his findings and his patience answering my questions :)
 
Odd things happens for me.

First time I installed Catalina, get a lot of lag, the system turn irresponsive for several seconds
That was meanwhile testing a streaming software and a couple of capture cameras.
Quit to Catalina instantly and back to Mojave. All works smooth

Today I said, that can't be over me!!

Installed Catalina again in a backup partition, upgrade to the last update, installed last Opencore version and again, lag and system freezed.

Opened console, looking for the issue, dig, dig and dig, and nothing... just a couple of mdworker warnings..

I quit the software, opened again, get lag, dig into console, nothing.

Quit software again, open and boom!, the system ran smooth, streaming upload very good, al seems normal.

Look back to console and I noticed the system end the indexing.

I still testing it, all good.

It is normal Catalina freezes issues when indexing after fresh installation?
I ask because never happens to me in any machine, neither in this cMP in Mojave...
 
My USB issue on MacPro5,1 with OC 0.7 and Big Sur 11.4 is just getting weirder. After spending the entire weekend trying all combinations of USBMouse, USBInjectAll, USBMap and USBPorts, I found that not doing anything actually works ok. When I plug in my iPhone, it detects it; when I plug in a wired keyboard, it works; when I plug in a wired mouse, it does nothing. Very odd. I've even tried ACPI patches, creating maps with USB-Mapper and hackintool. Still no dice.

I also found that when I put the machine to sleep, it doesn't wake up; even with the HibernateFix kext. Annoying.

Otherwise BigSur works ok.
 
When I plug in my iPhone, it detects it; when I plug in a wired keyboard, it works; when I plug in a wired mouse, it does nothing. Very odd.
This is actually a well-known issue. Hot plugging USB 1.x devices into a Mac Pro 5,1 is broken in Big Sur. The workaround is to connect devices through a USB hub. USB 2.0 devices work fine.

I also found that when I put the machine to sleep, it doesn't wake up; even with the HibernateFix kext.
This is probably due to some device. Wake from sleep should work fine even without that kext.

Note that macOS 11.3 and higher is not recommended at all on the Mac Pro 5,1. You will eventually run into booting issues if you haven't already and perhaps even corrupt your macOS disk as well as other disks connected to your machine.
 
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Hi everyone, Mac Pro 5,1 here, successfully updated to Big Sur, OC updated to 0.7.0.
Everything works great, System Preferences sees the Big Sur 11.4 update, but "cannot" to download it, as if i wasn't connected to internet ... Followed OP full tut, Hybridation technique used, VMM flag off ... What can i do ?
 
Hi everyone, Mac Pro 5,1 here, successfully updated to Big Sur, OC updated to 0.7.0.
Everything works great, System Preferences sees the Big Sur 11.4 update, but "cannot" to download it, as if i wasn't connected to internet ... Followed OP full tut, Hybridation technique used, VMM flag off ... What can i do ?
Read this (and have fun, obviously)
 
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