Successful 11.3.1 install with bigmac2

[Rob4n]

I was wondering if anyone has successfully installed 11.3 using bigmac. I have a Mac Pro 3.1 myself and I am probably going to try installing 11.3 later this week on a separate partition. Is bigmac still the best way of installing Big Sur on a Mac Pro 3.1 now that it is not updating anymore? Does anyone know if OpenCore is a good alternative maybe? Anyway, im probably going to try installing it using bigmac later and post it here.

[Rob4n]

I just did the install on a separate partition (so a clean install) and everything went much smoother then expected. It went even smoother than my install of 11.2! I just downloaded 11.3.1 from the App Store, made the install disk, and followed the steps! as simple as that! I did have to allow the hdmi audio patch in the security and privacy settings for some reason, but the rest of the things were all working. The exact steps I went through are: - create install disk - boot from install disk - open bigmac2 and run preinstall script - install Mac OS - cut off the boot loop after 3 boots - booted back into the install disk and applied the post install patches (this is where it froze for me with 11.2) - went through the setup and then reapplied the post install patches from within macOS (cause I did not see the hdmi audio out, it also does this on my 11.2 install sometimes) after reapplying the post install it asked me to allow it in the settings and then I did and everything worked!

[StarPlayrX]

Nice

[StarPlayrX]

Just an FYI to users. the BigMac 2 alpha doesn't like spaces on the Post Install Boot disk. I plan to fix it soon.

[StarPlayrX]

Also for anyone who is interested the BigMac 2 alpha code is in its own branch (not in master).

It is not the most organized and I may have it do more stuff from the ground up again. I currently started a new job and that's been my focus at this time.

[StarPlayrX]

added 11.3.1 to bigmac2 source code.

[Rob4n]

added 11.3.1 to bigmac2 source code.

Thank you! I am very happy to see you more active on here, and I look forward to seeing this project develop further. I really like this patcher and hope it will stay around for a long time! Thanks for all your hard work and I hope your new job is going well!

[LIQUID-DARKNESS]

your tool still not working, it's not possible to download the current 11.3.1 or 11.2.

when I download the system from another source and install via /Applications, the installation still doesn't work on MacPro 5.1

it's a crab ..

[Rob4n]

your tool still not working, it's not possible to download the current 11.3.1 or 11.2.

when I download the system from another source and install via /Applications, the installation still does not work on MacPro 5.1

it's a crab ..

He said he added it to the SOURCE CODE, not the application itself. If you want to use it you would have to open the project in Xcode and export it again. (I think)

[Rob4n]

your tool still not working, it's not possible to download the current 11.3.1 or 11.2. when I download the system from another source and install via /Applications, the installation still does not work on MacPro 5.1 it's a crab ..

He said he added it to the SOURCE CODE, not the application itself. If you want to use it you would have to open the project in Xcode and export it again. (I think)

Here you go: https://mega.nz/folder/xc90jQJD#sqZbnbqnNafgAX2eNLs-QQ/folder/hIUVFIKK

[LIQUID-DARKNESS]

your tool still not working, it's not possible to download the current 11.3.1 or 11.2. when I download the system from another source and install via /Applications, the installation still does not work on MacPro 5.1 it's a crab ..

He said he added it to the SOURCE CODE, not the application itself. If you want to use it you would have to open the project in Xcode and export it again. (I think)

Here you go: https://mega.nz/folder/xc90jQJD#sqZbnbqnNafgAX2eNLs-QQ/folder/hIUVFIKK

thanks mate, but it also doesn't work:

[Rob4n]

your tool still not working, it's not possible to download the current 11.3.1 or 11.2. when I download the system from another source and install via /Applications, the installation still does not work on MacPro 5.1 it's a crab ..

He said he added it to the SOURCE CODE, not the application itself. If you want to use it you would have to open the project in Xcode and export it again. (I think)

Here you go: https://mega.nz/folder/xc90jQJD#sqZbnbqnNafgAX2eNLs-QQ/folder/hIUVFIKK

thanks mate, but it also doesn't work:

You can do it yourself. Download the source code here: https://github.com/StarPlayrX/bigmac/tree/bigmac2.0-alpha Then download Xcode in the App Store, open the project and then go to "product" -> "archive" -> "distribute app" -> "copy app" and then save it wherever you want. If it gives you errors about signing the product go to "bigmac2" -> "signing and capabilities" and change signing certificate from "development" to "sign to run locally"

[LIQUID-DARKNESS]

your tool still not working, it's not possible to download the current 11.3.1 or 11.2. when I download the system from another source and install via /Applications, the installation still does not work on MacPro 5.1 it's a crab ..

He said he added it to the SOURCE CODE, not the application itself. If you want to use it you would have to open the project in Xcode and export it again. (I think)

Here you go: https://mega.nz/folder/xc90jQJD#sqZbnbqnNafgAX2eNLs-QQ/folder/hIUVFIKK

thanks mate, but it also doesn't work:

You can do it yourself. Download the source code here: https://github.com/StarPlayrX/bigmac/tree/bigmac2.0-alpha Then download Xcode in the App Store, open the project and then go to "product" -> "archive" -> "distribute app" -> "copy app" and then save it wherever you want. If it gives you errors about signing the product go to "bigmac2" -> "signing and capabilities" and change signing certificate from "development" to "sign to run locally"

what exactly should I put in Xcode.app?

[LIQUID-DARKNESS]

bigmac2.zip

[StarPlayrX]

@LIQUID-DARKNESS

bigmac2.pkg.zip

pkg made with

pkgbuild --component "bigmac2.app" --install-location "/Applications" bigmac2.pkg

[Rob4n]

@LIQUID-DARKNESS bigmac2.pkg.zip pkg made with pkgbuild --component "bigmac2.app" --install-location "/Applications" bigmac2.pkg

The installation will not take place, it is not possible to boot into the installation USB, all at the end of this screen.

it also damaged my primary disk and disk backup

Thank you soo much Todd

Idk what you are saying and don't understand your issue, but whatever the issue is, it is not Todd's fault as it is not caused by the package being faulty. I have install bigmac2 using that same pkg and have not had any issues. I am also now running Mac OS 11.3.1 on my main partition and have not had any issues yet. So you must have done something wrong.

[StarPlayrX]

I've tested the package on another Mac and it loads fine. The same package method was used to created the previous alpha pkg's.

[nomorewar]

I'm on a MacPro 3.1 with a flashed GeForce GTX 680. After creating the bigmac2 installer disk I cannot boot from that disk for some reason. When I select it in the bootmenu, it starts loading and then kills with a kernel panic. Tried it a lot of times with no succes. But for so far I managed to install big sur on a separate SSD with bigmac2 post install within Catalina. When trying to boot it kills the same way as booting from bigmac installer. But starting in single user mode it installed big sur. But after reboot it kills and restarts. I've tried to patched the BigSur disk with bigmac2 post install in Catalina but bigmac2 crashes on the Update boot & system KC's. But when I plugged the Big Sur SSD disk to another Mac with Big Sur on it, I managed to patch the disk 'successfully'. But put it back in my Mac Pro it stuck half way while loading. That's it. What could I try to let it work?

[nomorewar]

Btw I used Todd's bigmac2.pkg from above and the Big Sur 11.3.1 installer app.

[evasilis]

Hi all

Has anyone mange to do successful and working installation of 11.3.x on a 5,1 macpro?

[kimi1974]

I just install Big Mac on Mac Pro 4.1 flashed to 5.1 Till 11.2.3 everything was fine. When I try to install 11.3.1 then a lot s of problem. usb boot was fine. all files downloaded to ssd. first reboot - on black apple logo stopped. manually turned off. reboot. after few second black apple changed to silver (and counter starts how many left) reboot. boot to Big Sur - stucked on black apple logo - manually turned off. Mac starts boot again. on black logo stopped. reverted 11.2.3 everything went without problem. even post install was not important.

Now I downloaded another bigamac.app from here. I got message 11.3.1 is downloading. so will try I next couple of minutes. I will let know

My Mac

crsutil disable csrutil authenticated-root disable boot-args amfi_get_out_of_my_way=1 -no_compat_check arch=x86_64

[bloubum]

NOT WORKING. On a Mac Pro 5,1. with the patch download from the link above. (bigmac2.pkg.zip). Made a USB thumb drive installer using the bigmac2 app to downloaded Big Sur 11.3.1, booted from the thumb drive, did a clean install on its own SSD with nothing else on it, restarted and would NOT BOOT. Restarted using the same thumb drive and applied the Post Install, blessed the hard drive and it would NOT BOOT. Put the hard drive in an iMac and installed Big Sur downloaded from the Apple store, put the hard drive back in my Mac, restarted from the thumb drive and applied the Post Install, blessed the drive and it would NOT BOOT. I am going to have to assume that this just does not work with 11.3.1

[kimi1974]

Confirm. not working at all... I thing the last working version is 11.2.3 (at the moment)

[bloubum]

Hi all

Has anyone mange to do successful and working installation of 11.3.x on a 5,1 macpro?

Not at all.

[LIQUID-DARKNESS]

the installation still doesn't work on MacPro 5.1

it's a crab ..

[evasilis]

It could be the end of the road for 5,1 macpros

[Rob4n]

It could be the end of the road for 5,1 macpros

Just have some patience, I am sure there is a workaround and I am sure @StarPlayrX will find it. In the meantime you can look into other options like OpenCore Legacy Patcher or just stay on 11.2.1 until bigmac gets an update.

[nomorewar]

I just did the install on a separate partition (so a clean install) and everything went much smoother then expected. It went even smoother than my install of 11.2! I just downloaded 11.3.1 from the App Store, made the install disk, and followed the steps! as simple as that! I did have to allow the hdmi audio patch in the security and privacy settings for some reason, but the rest of the things were all working. The exact steps I went through are: - create install disk - boot from install disk - open bigmac2 and run preinstall script - install Mac OS - cut off the boot loop after 3 boots - booted back into the install disk and applied the post install patches (this is where it froze for me with 11.2) - went through the setup and then reapplied the post install patches from within macOS (cause I did not see the hdmi audio out, it also does this on my 11.2 install sometimes) after reapplying the post install it asked me to allow it in the settings and then I did and everything worked!

OK, after multiple ways of trying, no result. Bigmac2 installer does work now with some faults now and then, but it works. I have created the installer on another Mac with Big Sur. Have to choose for single user mode, because otherwise it will absolutely not work. But installing BigSur via preinsall wit the bigmac2 installer disk and then do the exact same steps as @Rob4n is not working on my Mac Pro 3.1 with almost the exact same specs as @Rob4n. I’m lost, why is it not working...

[Rob4n]

I just did the install on a separate partition (so a clean install) and everything went much smoother then expected. It went even smoother than my install of 11.2! I just downloaded 11.3.1 from the App Store, made the install disk, and followed the steps! as simple as that! I did have to allow the hdmi audio patch in the security and privacy settings for some reason, but the rest of the things were all working. The exact steps I went through are: - create install disk - boot from install disk - open bigmac2 and run preinstall script - install Mac OS - cut off the boot loop after 3 boots - booted back into the install disk and applied the post install patches (this is where it froze for me with 11.2) - went through the setup and then reapplied the post install patches from within macOS (cause I did not see the hdmi audio out, it also does this on my 11.2 install sometimes) after reapplying the post install it asked me to allow it in the settings and then I did and everything worked!

OK, after multiple ways of trying, no result. Bigmac2 installer does work now with some faults now and then, but it works. I have created the installer on another Mac with Big Sur. Have to choose for single user mode, because otherwise it will absolutely not work. But installing BigSur via preinsall wit the bigmac2 installer disk and then do the exact same steps as @Rob4n is not working on my Mac Pro 3.1 with almost the exact same specs as @Rob4n. I’m lost, why is it not working...

You can maybe try executing the preinstall script in Mac OS itself, so not while booting into the installer and then starting the install.app. If that doesn't work try installing it with bigmac 1.1.

[nomorewar]

@Rob4n Well, finally it succeeded. Not the way you suggested earlier, but also thanx for that. It was a hell of a ride haha, but everything seems to work now. The only thing is that sometimes after reboot, the OS is not found. A Pram reset and boot in single user mode is for now the solution, but if that could be solved it is a bless. Do you @StarPlayrX maybe know why that happen?

[bloubum]

I will try single user mode as suggested by Rob4n . However, If Rob4n way did not work for you nomorewar, why not share here what did work?! Also: I am installing on a Sata SSD but am wondering also if anybody knows if 11.3.1 will boot from an MVMe. I have a fusion SSD M.2 4 X 4 PCIe card and would like to do a Carbon Copy Cloner to one day but right now I just want to see if I can even get it to work on a SATA SSD.

[nomorewar]

@bloubum I don't know if the way I did it works for anybody, because the workaround of @Rob4n on his Mac Pro 3.1 did not work out on my Mac Pro 3.1. After trying a lot of things, even with bigmac 1.1., and not working at all I thaught over all the things already done and how other users did it. What I did before every time after the preinstall of Big Sur (the black screen with Apple logo and estimated install time beneath it) I started up Bigmac2 install disk and then patched the Bigsur disk. But then after restart it stucks on loading half way and freezes the system. Even starting up in single user mode. What I did different now was the preinstall of Big Sur via Bigmac 2 app on another Big Sur installed machine. Restarted and booted into that installation and let it finish 'till the language selection screen comes up. There I stopped and forced quit the system, put the disk back in my Mac Pro and booted into bigmac2 install disk and THEN patched the disk with bigmac2 postinstall . I did this in 2 steps this time. I don't know why I did that and probably it doesn't matter, but it was a sort of desperate action because of all those hours of trying without success. The first time I patched the disk but deselected Disable Bluetooth 2.0, Legacy 802.11n WiFi and Nvidia HDMI Audio. After blessing the system and then rebooted, it restarted 2 times and the 3th it stuck while loading. Then I forced shut down the Mac and on the boot screen (holding Alt while firing up the Mac) I booted back in bigmac 2 and did a new patch but now only Disable Bluetooth, Legacy 802.11n WiFi, Bless System Volume and Update Boot and System KCs selected. Rebooted and about halfway loading a no OS symbol appeared. I restarted the Mac in single user mode and this time about half way it went to a grey screen and a mouse icon in the left top corner. This was the moment my heart stared beating a bit faster. It was for about a minute or 2 and then the language selector was there popping up. Btw my system had a separate bluetooth adapter and did removed this, the wifi adapter was stayed in place. I think of ordering a BCM94360CD card with Wifi and BT 4.0.

[jdadoco]

Good afternoon friends.

I still have the same problems when trying to install Big Sur on my Mac Pro 3.1 with BigMac2 (in this case I have tried the new updates, but it keeps failing), I don't know what else to do, waiting for a clearer step by step. Mine is the following:

1. I run the BigMac2 "Preinstall"
2. It installs without problems on the disk you select (I must clarify that I have always tried to perform a clean installation).
3. The "preinstall" automatically closes the programs you have open.
4. I disconnect the disk where I have Catalina installed so that it does not interfere with the Big Sur boot (11.3.1) with which I am testing.
5. Start the BigSur installation without problems (approximately 20 to 25 minutes), and then restart.
6. When I try to boot with the installation, it does not start, I only see the white screen indicating that there is no boot disk to start.
7. I try to run "postinstall" with Catalina to the disk that I just installed, but it fails.

I do not know what I'm doing wrong.

They help me.

Thank you.

[Rob4n]

Good afternoon friends.

I still have the same problems when trying to install Big Sur on my Mac Pro 3.1 with BigMac2 (in this case I have tried the new updates, but it keeps failing), I don't know what else to do, waiting for a clearer step by step. Mine is the following:

1. I run the BigMac2 "Preinstall"
2. It installs without problems on the disk you select (I must clarify that I have always tried to perform a clean installation).
3. The "preinstall" automatically closes the programs you have open.
4. I disconnect the disk where I have Catalina installed so that it does not interfere with the Big Sur boot (11.3.1) with which I am testing.
5. Start the BigSur installation without problems (approximately 20 to 25 minutes), and then restart.
6. When I try to boot with the installation, it does not start, I only see the white screen indicating that there is no boot disk to start.
7. I try to run "postinstall" with Catalina to the disk that I just installed, but it fails.

I do not know what I'm doing wrong.

They help me.

Thank you.

Did you create a bootable hard drive with bigmac2 on it? Because bigmac2 needs some permissions that it can't get while running in normal macOS. So just open bigmac2, and click on "create installer disk". I recommend using a external hard drive instead of an usb, because for some reason that works better. If you have one an external ssd would be the best as it is much faster than normal usb's. (if you have a hard drive laying around you can buy a hard drive enclosure so it can connect to your computer via usb, I just use a old external 250gb hard drive I had laying around and it works just fine)

[nomorewar]

Good afternoon friends. I still have the same problems when trying to install Big Sur on my Mac Pro 3.1 with BigMac2 (in this case I have tried the new updates, but it keeps failing), I don't know what else to do, waiting for a clearer step by step. Mine is the following:

1. I run the BigMac2 "Preinstall"
2. It installs without problems on the disk you select (I must clarify that I have always tried to perform a clean installation).
3. The "preinstall" automatically closes the programs you have open.
4. I disconnect the disk where I have Catalina installed so that it does not interfere with the Big Sur boot (11.3.1) with which I am testing.
5. Start the BigSur installation without problems (approximately 20 to 25 minutes), and then restart.
6. When I try to boot with the installation, it does not start, I only see the white screen indicating that there is no boot disk to start.
7. I try to run "postinstall" with Catalina to the disk that I just installed, but it fails.

I do not know what I'm doing wrong. They help me. Thank you.

Did you create a bootable hard drive with bigmac2 on it? Because bigmac2 needs some permissions that it can't get while running in normal macOS. So just open bigmac2, and click on "create installer disk". I recommend using a external hard drive instead of an usb, because for some reason that works better. If you have one an external ssd would be the best as it is much faster than normal usb's. (if you have a hard drive laying around you can buy a hard drive enclosure so it can connect to your computer via usb, I just use a old external 250gb hard drive I had laying around and it works just fine)

What I have done, is created a 32 GB partition on the hard drive I also installed Big Sur on. But, as read above It was a strange way how I managed a finally working Big Sur OS. For my situation it was helpfully to accomplish the installation till the language selector on a separate Big Sur supported Mac. But as @Rob4n noted a hard drive for bigmac2 installer disk works better than an usb thumb drive.

[jdadoco]

Hello @Rob4n @nomorewar

Good morning friends.

I am going to test today with an old 120GB ssd disk that I have available for testing and today I will tell you how I am doing. I'm going to partition the disk into 2 partitions (the first 60GB to use the "Create USB Installer" option, and the other 60GB for the Big Sur clean install). I'm fine?

Thank you.

I'll tell you in the afternoon.

Greetings.

[jdadoco]

I just ran several tests as directed, with the 120GB SSD. I used BigMac2 2.0 and BigMac2 A2 to create the partition, but they both don't boot. it only shows me the Catalina partition that I have on another disk.

I attach a photograph of the bootscreen.

I do not understand why the partition "Install MacOs Big Sur" does not seem to me, the BigMac versions 2.0 and A2 are not creating it.

[Rob4n]

I just ran several tests as directed, with the 120GB SSD. I used BigMac2 2.0 and BigMac2 A2 to create the partition, but they both don't boot. it only shows me the Catalina partition that I have on another disk.

I attach a photograph of the bootscreen.

I do not understand why the partition "Install MacOs Big Sur" does not seem to me, the BigMac versions 2.0 and A2 are not creating it.

Start by downloading dosdude1s apfs rom patcher en running that, without it you can’t have bigsur using bigmac2. You can download the patcher from bigmac2, it’s in the section where you also download the Big Sur installer. If you don’t know what it is or how to use it ask someone in this forum thread: https://forums.macrumors.com/threads/apfs-rom-patcher.2211396/

[jdadoco]

Hello @Rob4n @nomorewar

I'm already doing it. Indeed I had to patch my computer with the APFS ROM Patcher that you sent earlier. Then I followed the steps already known and got to the attached screen. I can't move the mouse or keyboard. What do you recommend me to do? I tried several versions of BIG Mac, but they all lead me to the same thing, from there it did not happen. Another test I tried was using Single User boot, but it didn't work for me either. Any contribution is pending ;-)

[Rob4n]

Hello @Rob4n @nomorewar

I'm already doing it. Indeed I had to patch my computer with the APFS ROM Patcher that you sent earlier. Then I followed the steps already known and got to the attached screen. I can't move the mouse or keyboard. What do you recommend me to do? I tried several versions of BIG Mac, but they all lead me to the same thing, from there it did not happen. Another test I tried was using Single User boot, but it didn't work for me either. Any contribution is pending ;-)

What I always do is boot back into the usb installer, connect a bluetooth mouse and keyboard (because for me my mouse and keyboard don't work in the installer) and then run all the patches (so the post install section). After the patches your mouse and keyboard should work. (make sure you have the legacy usb 1.1 option selected when running the patches) If the post install script doesn't want to run, or crashes, you have to make a separate partition on your install disk called "bigmac" and then copy all the bigmac 1.1 files on there. You can download those files here: https://github.com/StarPlayrX/bigmac/archive/refs/heads/master.zip After copying the files, boot back into the installer and put this into the terminal: "/Volumes/bigmac/postinstall.sh" and then follow the instructions on screen.

[jdadoco]

Hello @Rob4n @nomorewar I'm already doing it. Indeed I had to patch my computer with the APFS ROM Patcher that you sent earlier. Then I followed the steps already known and got to the attached screen. I can't move the mouse or keyboard. What do you recommend me to do? I tried several versions of BIG Mac, but they all lead me to the same thing, from there it did not happen. Another test I tried was using Single User boot, but it didn't work for me either. Any contribution is pending ;-)

What I always do is boot back into the usb installer, connect a bluetooth mouse and keyboard (because for me my mouse and keyboard don't work in the installer) and then run all the patches (so the post install section). After the patches your mouse and keyboard should work. (make sure you have the legacy usb 1.1 option selected when running the patches) If the post install script doesn't want to run, or crashes, you have to make a separate partition on your install disk called "bigmac" and then copy all the bigmac 1.1 files on there. You can download those files here: https://github.com/StarPlayrX/bigmac/archive/refs/heads/master.zip After copying the files, boot back into the installer and put this into the terminal: "/Volumes/bigmac/postinstall.sh" and then follow the instructions on screen.

Hello my friend. @Rob4n @nomorewar

I followed your instructions, and the same thing still happens to me, additionally I tried with a PCIE USB3 card and I got to the same screen, I have not been able to advance.

Any other suggestions?

[nomorewar]

Hello @Rob4n @nomorewar I'm already doing it. Indeed I had to patch my computer with the APFS ROM Patcher that you sent earlier. Then I followed the steps already known and got to the attached screen. I can't move the mouse or keyboard. What do you recommend me to do? I tried several versions of BIG Mac, but they all lead me to the same thing, from there it did not happen. Another test I tried was using Single User boot, but it didn't work for me either. Any contribution is pending ;-)

What I always do is boot back into the usb installer, connect a bluetooth mouse and keyboard (because for me my mouse and keyboard don't work in the installer) and then run all the patches (so the post install section). After the patches your mouse and keyboard should work. (make sure you have the legacy usb 1.1 option selected when running the patches) If the post install script doesn't want to run, or crashes, you have to make a separate partition on your install disk called "bigmac" and then copy all the bigmac 1.1 files on there. You can download those files here: https://github.com/StarPlayrX/bigmac/archive/refs/heads/master.zip After copying the files, boot back into the installer and put this into the terminal: "/Volumes/bigmac/postinstall.sh" and then follow the instructions on screen.

Hello my friend. @Rob4n @nomorewar

I followed your instructions, and the same thing still happens to me, additionally I tried with a PCIE USB3 card and I got to the same screen, I have not been able to advance.

Any other suggestions?

How long do you wait before shutting down? Because mouse and keyboard response can take a while sometimes. For some reason only my original USB Apple keyboard works at that point of installation. If my Logitech unifying receiver (used for mouse and keyboard) is put in the original USB Apple Keyboard port it works, but if put directly in the Mac Pro's USB port it does not work. Can't tell why that is, but maybe if you're not using an original Apple USB keyboard/mouse that is an option to try?

[jdadoco]

Hello @Rob4n @nomorewar I'm already doing it. Indeed I had to patch my computer with the APFS ROM Patcher that you sent earlier. Then I followed the steps already known and got to the attached screen. I can't move the mouse or keyboard. What do you recommend me to do? I tried several versions of BIG Mac, but they all lead me to the same thing, from there it did not happen. Another test I tried was using Single User boot, but it didn't work for me either. Any contribution is pending ;-)

What I always do is boot back into the usb installer, connect a bluetooth mouse and keyboard (because for me my mouse and keyboard don't work in the installer) and then run all the patches (so the post install section). After the patches your mouse and keyboard should work. (make sure you have the legacy usb 1.1 option selected when running the patches) If the post install script doesn't want to run, or crashes, you have to make a separate partition on your install disk called "bigmac" and then copy all the bigmac 1.1 files on there. You can download those files here: https://github.com/StarPlayrX/bigmac/archive/refs/heads/master.zip After copying the files, boot back into the installer and put this into the terminal: "/Volumes/bigmac/postinstall.sh" and then follow the instructions on screen.

Hello my friend. @Rob4n @nomorewar I followed your instructions, and the same thing still happens to me, additionally I tried with a PCIE USB3 card and I got to the same screen, I have not been able to advance. Any other suggestions?

How long do you wait before shutting down? Because mouse and keyboard response can take a while sometimes. For some reason only my original USB Apple keyboard works at that point of installation. If my Logitech unifying receiver (used for mouse and keyboard) is put in the original USB Apple Keyboard port it works, but if put directly in the Mac Pro's USB port it does not work. Can't tell why that is, but maybe if you're not using an original Apple USB keyboard/mouse that is an option to try?

Hi friends. @Rob4n @nomorewar

Dust off my old keyboard, I follow your recommendation, but it still hasn't worked. I do not know what else to do.

[bloubum]

I gave up on this and tried OCLP. At first I did not want to go this route because I read that boot camp will not work. For me I have Window on another hard drive so I removed it. I installed 11.4 on another SSD using a supported Mac, then put that SSD in my Mac Pro 5,1. Booted into 11.2.1 that was patched with Big Mac, applied the OCLP and restarted holding option key, then select EFI or whatever it’s called and a second screen appeared where I then selected 11.4 on my SSD that I installed from the supported Mac. And it worked. Everything works. I even have nightshift and handoff working that never worked even back when using DOSDUDE patcher. My camera, my wifi and blue tooth, airdrop and everything apple has been stripping away from me over the years that so called (environmentally friendly) apple took away. Hay apple, there is a reason the order is REDUCE , REUSE AND RECYCLE. Recycle being at the end of the list. Next I will try to CCC to my NVME and hope that works or will it just be another thing that Apple tries to take away from me. FYI. I upgraded to Bluetooth 4. One more note. I can still boot into windows 10 if I choose it on the first boot loader screen. Once everything is set up and working, I can set OCLP to automatically boot into the my default Mac OS of choice. I’ll keep you posted on the MNVM booting.

[StarPlayrX]

It is possible to combine the Open Core Boot loader with BigMac2. In fact future versions of bigmac2 will include a bare bones Open Core boot loader on its EFI partition. And BigMac2 will start to be engineered to OC and OC will also be setup to play nice with BM.

[Nateqdin]

Hi, so sorry for the dumb question, where is the installer link so i can download the installer package of Big mac 2. I watched your videos and the link is no longer where it was in your video. Thank you!

Im using a early 2008 Mac Pro 3,1

[StarPlayrX]

For now you'll need to either compile it from source using Xcode or find someone who can compile it for you.

There are no dependencies so compiling the app isn't that difficult.

[Nateqdin]

For now you'll need to either compile it from source using Xcode or find someone who can compile it for you.

There are no dependencies so compiling the app isn't that difficult.

Ok Perfect Will Do! Thank You!