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macOS 10.15 Catalina on Unsupported Macs
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I've tried a clean installation from high sierra directly to catalina after re-formatting the HD a lots of times and everytime I've the error: "an error occurred while preparing the installation. Try running this application again". Any suggest?
If the processor and the chipset in your Mac don't support 8 or 16 GB you can update your EFI what you want, your Mac will never support more RAM
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Normal, intended and absolutely necessary unless you have your EFI patched
A clean install means erasing your hdd/dd and installing macOS Catalina and it has to to formatted in APFS your usb has to be 16gb and formatted extended Journaled
Completely normal. Your mac does not support booting from APFS formatted drives, so @dosdude1 uses this “trick” for you can boot Catalina, that has to be installed in APFS.
I have a mid 2009 as well. The black screen with lines of text during boot is normal unless you apply the BootROM patch to enable APFS booting. This isn't necessary, but it is a nice to have.
Be warned, the BootROM patch for our model of MacBook has 3 potential options for the EFI chip identifier. If you want native APFS boot and decide to go ahead with the patch, DO NOT assume the default option is correct. For me it was not. Fortunately, the chip in our laptops is readily visible by simply removing the back panel - no need to remove the logic board. Find the chip with the big "MX" on it and take a well lit photo of it, ensuring you can see all of the numbers and letters. If you aren't sure that these correspond to one of the options on the BootROM patcher, DO NOT continue. There is no rush, come back here with your photo and a screenshot of your options.
If you do go ahead, be VERY patient. It takes a surprisingly long time to flash 4MB. Choosing the wrong option or interrupting the flashing process will almost certainly render your logic board useless without some major surgery.
Haaaallooo your late sleepers the DP3 is here !!! for Catalina 10.15.2 Build 19C46a
Hi with regard to the dGPU AMD chip here is what has been good for my 8,2: I used method described in #2 with command lines . Method #1 from Dosdude didn't work for me as explained but could be the fastest. The only thing I don't know is if you need to rest PRAM or SMC if it requires re-executing Dosdude's script. In any case if you need to rest PRAM or SMC I have had with solution #2 disable dGPU thru the script described. hope this helps
Solution #1.
I haven't tried this as my dGPU problem occurred before I had read the following Dosdude process but in your case you can try before solution 2 (after having reading both to see which line you would like to take).
http://dosdude1.com/gpudisable/
Solution #2.
Read instructions for the "software" process to disable defective dGPU found in MacBook Pro forums (Force 2011 MacBook Pro 8,2 with failed AMD GPU to ALWAYS use Intel integrated GPU (EFI variable fix) thread #875 to initially disable dGPU. (there are also permanent methods to disable the dGPU in these forums and in Dosdude's website). Using this method, I have setup the simple shell script "force-iGPU-boot.sh" as indicated by MikeyN thread 875 above and that I have reside in root (once Catalina is installed as it will erase it at every new Cat. Install) in the case of an "unlikely but possible" need to reset PRAM or SMC resulting in the loss of the dGPU bypass, I can simply and quickly execute in single user mode to restore dGPU disabling and quickly recover from the screen issue because of the defective dGPU.
What I have noticed in the most recent patches and lately the 1.2.3 is however that the "extensions-off" folder that is created in the above process and where the AMDRadeonX3000.kext resides doesn't seem necessary any more to run Catalina using your Dosdude patch (which remains in the Extensions folder). However I still create the folder Extensions-off (with the Loginhook script mentioned in thread 875) as it states "the system doesn't know how to power-management the failed AMD-chip and is said to also better manage temperatures. Is this still true and the extensions-off folder still needed? Or can it be made redundant as well as the force-iGPU-boot.sh script with Dosdude's latest patch is a question that perhaps Dosdude can answer but that in any case doesn't prevent running effectively Catalina on MBP 8,2 and 8,3.
PS As mentioned initially, I have tried using Dosdude's dGPU executable method as in solution #1 but my system in the past crashed and rebooted to a blank grey screen a few tries (probably in conflict with my use of Solution #2) so I have just kept going with the tried and true "long form process" which seems to hold across the various patches and updates. In any case I have not had any issues you seem to suggest others have had with regard to function loss. You will need however to setup Airdrop if you use it here is the process described by @jackluke #5,709
Hopes this helps.
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Hi guys! How are you? Someone can tell if disabling dGPU with any method keep thunderbolt interface working on MBP8,2 or MBP8,3 (my case)? I want to use a eGPU, but I really can't find any answer for this question... First time I deactivated dGPU I ran the @dosdude1 method, but sleep function and brightness controls was lost. So I wrote a LoginHook script to move some kexts back in place, and I use an app (gfxCardStatus) to monitor and control when dGPU try to come back... My brightness controls and sleep are working like a charm. I'm running Mojave 10.14.6 with the last updates. Thanks in advance!
Hi,
you don't lose thunderbolt functionality except you won't be able to connect external display I believe.
Hello all,
couple of issues I am having with my Catalina which finally I got to work - when applying the night shift patch, have any of you had issue where you click on say keyboard preferences and it won’t open ? Also, does the 2011 MacBook Pro allow booting off AFS without the AFS patch from Dosdude ?
Finally, when I try to boot in safe mode, I got a prohibitory sign on boot.
mother than those, Catalina runs very nicely.
couple of issues I am having with my Catalina which finally I got to work - when applying the night shift patch, have any of you had issue where you click on say keyboard preferences and it won’t open ? Also, does the 2011 MacBook Pro allow booting off AFS without the AFS patch from Dosdude ?
Finally, when I try to boot in safe mode, I got a prohibitory sign on boot.
mother than those, Catalina runs very nicely.
Hi all,
Does anyone know If you can add more than 6g's of RAM on an unsupported iMac 8,1 running catalina
Cheers
Does anyone know If you can add more than 6g's of RAM on an unsupported iMac 8,1 running catalina
Cheers
I have a MBP mid 2009 (5,5) patched Catalina 10.15
My machine is Mac-F2268AC8
"IOName" = "pci14e4,432b"
Card Type: AirPort Extreme (0x14E4, 0x8D)
Have you please a patch for me for Airdrop Working on my MacBook Pro ?
Thanks a lot .
Has anyone noticed Siri doesn’t work and when you install night shift, the keyboard preference doesn’t work ?
and @timthomason for these AirPort Broadcom Wifi cards: 0x14E4, 0x8*
there is no AirDrop patch for Catalina since the patched driver causes a IO80211 kext kernel panic, those that work correctly with the patch are 0x14E4, 0x9* and later.
Hi!
I have a mac pro 3.1 with ati radeon 4870.
i had installed mojave perfectly....... Catalina no... why?
The system installation starts, stops 5 minutes from the end, and restarts. then the prohibition sign appears. how can i solve this?
Excuse my sinful English🤣🤣🤣🤣
HELP ME!!!!!!!!!!
I have a mac pro 3.1 with ati radeon 4870.
i had installed mojave perfectly....... Catalina no... why?
The system installation starts, stops 5 minutes from the end, and restarts. then the prohibition sign appears. how can i solve this?
Excuse my sinful English🤣🤣🤣🤣
HELP ME!!!!!!!!!!
Mojave is compatible with no-metal graphics card? will you develop a kext to make them compatible in Catalina?
You can bet your ass it wont be de
yeah, maybe if you add what system, configuration, GPU, etc… it helps
No telepatic powers here, still.
Thank you so much! I‘m going to try installing high sierra and come back here. It‘s weird, I don‘t remember installing Clover onto my macbook, I actually thought it was part of the patch. I do have a hackintosh running, so I guess that would explain it.