Will I be able to update as normal through the Software Update preferences pane once I install it on my mid 2012 MBP? Or will I have to go through the whole USB Installer process again?
Got a tip for us?
Let us know
Become a MacRumors Supporter for $50/year with no ads, ability to filter front page stories, and private forums.
macOS 11 Big Sur on Unsupported Macs Thread
- Thread starter dosdude1
- WikiPost WikiPost
- Start date
-
- Tags
- 10.16 macos unsupported
- Sort by reaction score
- Status
Did you go to the Option Boot screen and run EFI to boot.This will set necessary NVRAM parameters. It should quickly turn off. Then restart with Option and select the installer partition.
After doing this upgrade on my 2009 Mac Pro 4,1 -> 5,1 there is no video output. If I connect up using Screen Share the display is visible. The Graphics Card is not displayed in system information. Adding the original GT 120 card to the machine allows it to boot to the OS but is slow and pinwheels easily. During the boot the upper half of the display has purple lines before the entire display goes black. Any help is much appreciated!
Mac Pro 2009
5,1
macOS 11.0.1 Big Sur
AMD Vega 56 8GB
96 GB 1066 DDR3 ECC
1 TB NVMe M.2 SSD
2x 3.33 GHz Westmere Xeons
Mac Pro 2009
5,1
macOS 11.0.1 Big Sur
AMD Vega 56 8GB
96 GB 1066 DDR3 ECC
1 TB NVMe M.2 SSD
2x 3.33 GHz Westmere Xeons
Last edited:
Yes. Did that many times. No luck. Also tried booting Cmd-R into Recovery mode, then opening Terminal and typing this command sudo nvram boot-args="-no_compat_check"
No go. Just re-created the boot drive just in case, re-ran the patches — no go.
Last edited:
I downloaded Big Sur 11.0.1 20B29
installassistant.pkg from the link posted earlier
I ran the installassistant.pkg and it created the Install macOS Big Sur.app
I ran the app and updated my install of Big Sur 11.0.1 RC2 on my 2012 Macbook Pro no problems
But after updating ...
Using createmedia to make the Big Sur 11.0.1 20B29 USB boot drive
I get this error:
sudo /Applications/Install\ macOS\ Big\ Sur.app/Contents/Resources/createinstallmedia --volume /Volumes/UNTITLED
Ready to start.
To continue we need to erase the volume at /Volumes/UNTITLED.
If you wish to continue type (Y) then press return: Y
Erasing disk: 0%... 10%... 20%... 30%... 100%
Copying to disk: 0%... 10%... 20%... 30%... 40%... 50%... 60%... 70%... 80%... 90%... 100%
Making disk bootable...
Couldn't extract BaseSystem to path: /Volumes/Install macOS Big Sur/BaseSystem
The bless of the installer disk failed.
How can I manually Bless the USB drive?
installassistant.pkg from the link posted earlier
I ran the installassistant.pkg and it created the Install macOS Big Sur.app
I ran the app and updated my install of Big Sur 11.0.1 RC2 on my 2012 Macbook Pro no problems
But after updating ...
Using createmedia to make the Big Sur 11.0.1 20B29 USB boot drive
I get this error:
sudo /Applications/Install\ macOS\ Big\ Sur.app/Contents/Resources/createinstallmedia --volume /Volumes/UNTITLED
Ready to start.
To continue we need to erase the volume at /Volumes/UNTITLED.
If you wish to continue type (Y) then press return: Y
Erasing disk: 0%... 10%... 20%... 30%... 100%
Copying to disk: 0%... 10%... 20%... 30%... 40%... 50%... 60%... 70%... 80%... 90%... 100%
Making disk bootable...
Couldn't extract BaseSystem to path: /Volumes/Install macOS Big Sur/BaseSystem
The bless of the installer disk failed.
How can I manually Bless the USB drive?
Last edited:
Ok, never mind everyone. Tried a different installation usb drive and all good now.
Next issue is the Installer says I only have 27gb of space, when I have over 250GB on that 500GB SSD. I think it’s TM snapshots, will work on removing them next.
Next issue is the Installer says I only have 27gb of space, when I have over 250GB on that 500GB SSD. I think it’s TM snapshots, will work on removing them next.
Last edited:
Upgraded successfully on my MacBook Pro 9,2 (13 inch, Mid 2012 model) using described USB instructions and kext patcher.
One thing I notice wrong straight off however, I cannot get an external display to connect using a thunderbolt to HDMI adapter where it worked in Catalina. Is this an already known limitation?
One thing I notice wrong straight off however, I cannot get an external display to connect using a thunderbolt to HDMI adapter where it worked in Catalina. Is this an already known limitation?
Late 2013 iMac
In Step 4. I Used Disk Utility to erase the USB stick using "Mac OS Extended (Journaled)" format but didn't find> "GUID Partition Map" scheme until I looked in the Apple UDZIF read only Media and I see Partition Map> GUID Partition Map. I'm lost now.
When I got to step 7 everything went fine and the I got this. How do I get to the GUID Partition Map part?
I don't see it anywhere.
I'm computer illiterate so I guess I need an easier how to or just forget it.
In Step 4. I Used Disk Utility to erase the USB stick using "Mac OS Extended (Journaled)" format but didn't find> "GUID Partition Map" scheme until I looked in the Apple UDZIF read only Media and I see Partition Map> GUID Partition Map. I'm lost now.
When I got to step 7 everything went fine and the I got this. How do I get to the GUID Partition Map part?
I don't see it anywhere.
I'm computer illiterate so I guess I need an easier how to or just forget it.
Attachments
click on view in pull down arrow and select show all to see the partition other details. apple hides this for simplicity some OS version ago.
How do I get the USB drive to set from MBR to GUID? During format?
Is there any way to get external video to work off of a MBP 13 inch?
start up disk utility. Upper left hand corner of the screen is the view tab arrow. click on the arrow and select show all. click on the usb device. click erase button. last field choose GUID. if still lost use google image search for pictures.
MacBook Pro Retina 15" Mid 2012: I'm still on 20B28, my external HDMI display is connected using Elgato Thunderbolt 2 dock and it works.
Thanks for the check, after all I found out my HDMI was not plugged properly on the other end.
It's working well now.Just a question.
I currently have a late 2013 iMac 27" (currently waiting for my M1 Mac Mini to ship) and if I go to Big Sur in the AppStore it says that "this mac is supported" under "Information". I thought that my iMac wouldn't be supported.
Should I try to run the installer?
I currently have a late 2013 iMac 27" (currently waiting for my M1 Mac Mini to ship) and if I go to Big Sur in the AppStore it says that "this mac is supported" under "Information". I thought that my iMac wouldn't be supported.
Should I try to run the installer?
Hello, I have a catalina patched by dosdude and I'm wondering if there will be a big sur patcher by dosdude?
i had the same problem, redownloaded the installer and it worked the second time
Last edited:
Well, I took the plunge and installed it on my main partition. And so far, it's running amazingly.
Thanks to all the devs who made this possible!! My Mac and I will enjoy another year of software updates that aren't just for security.
Thanks to all the devs who made this possible!! My Mac and I will enjoy another year of software updates that aren't just for security.
Well the Xeon processors are Ivy Bridge-EP and are handled by Intel's server division. The 2012 mini was discontinued in 2014, but actually Apple shouldn't have added it to the vintage list yet by their own definition (of not being sold for 5 years) because they did sell them new into 2016 (via the clearance section in the Apple store). I know because I bought one brand new from Apple in 2016 and it was not refurbished. The 2012 mini should therefore be supported by Big Sur. So Apple must go by the date the product was discontinued rather than last sold. They should fix that on their website because it's misleading. The 2013 Mac Pro of course is a special case since it wasn't discontinued until December 2019.
Hi all, iMac late 2012 here.
before I try to make it work on a half dead HDD (only SSD 128GB is alive)... I need to double check:
I downloaded wrong one haven't I? 20B28 (it should be 20B29 ?).
I guess the link shared was not final release but a beta? I am out of touch with everything, so if anyone able to share a working apple link of the latest pckg, it would be awesome.
before I try to make it work on a half dead HDD (only SSD 128GB is alive)... I need to double check:
I downloaded wrong one haven't I? 20B28 (it should be 20B29 ?).
I guess the link shared was not final release but a beta? I am out of touch with everything, so if anyone able to share a working apple link of the latest pckg, it would be awesome.
Attachments
#5.982
macOS 11 Big Sur on Unsupported Macs Thread
http://swcdn.apple.com/content/downloads/50/49/001-79699-A_93OMDU5KFG/dkjnjkq9eax1n2wpf8rik5agns2z43ikqu/InstallAssistant.pkg Direct link to 20B29
forums.macrumors.com
That is intriguing. Worth a try? Do you have pure SSD or Fusion?