#Macos runonly avoid detection for five driver#
#Macos runonly avoid detection for five manual#
#Macos runonly avoid detection for five upgrade#

So there is no general support available. The K3000 using the rom offers an EFI boot picker on the external screen. This card is Tesla based and offers no metal support. Another user installed a Nvidia GT120 successfully in his 27' iMac10,1 using the Apple BIOS made for the former A1224/A1225 models. Some other cards may work with the stock BIOS showing all the seven problems.

#Macos runonly avoid detection for five driver#

Check carefully which driver board you might need. One user reported the internal LCD would work after letting the system sleep.

External displays worked in any case, internal LCD within the 27 Late 2009, the others needed you to buy a special driver board and connect the internal screen with the external miniDP port (and make it an external one).

Core2Duo CPU systems: Tests with iMac10,1 21.5' Late 2009 and iMac9,1 24' Mid 2009 and the Late 2009 27 iMac10,1 with a new GPU have been made.

All NVIDIA MXM B and all AMD MXM B cards need the big three copper pipe MXM-B heat sink from the 27' mid 2011 model with the 6970M card to get the generated heat out of the system under load.

While all cards may function in a 21.5' model, the big ones are unstable due to their high power draw.

There are smaller MXM-A cards and bigger MXM-B cards running stable only in the 27' models.

No other (NVIDIA) GPU variant has driver support for macOS 14+ (Mojave and later).

In general only NVIDIA Kepler, or AMD GCN 4 Baffin, Ellesmere, Polaris20, Polaris21, and AMD GCN 1-3 cards will work in these iMacs with macOS including Monterey.

The only way to get AMD cards working with an EFI Boot screen needs an iMac firmware modification.

The AMD GOP vBIOS version using OpenCore to provide a boot screen work perfectly also with the Late 2009 27 iMac10,1 and of course with iMac11,x and iMac12,x systems.

These machines are: iMac11,x and iMac12,x systems.

The modified (NVIDIA video) BIOS with EFI boot screen version require an Intel i3 CPU or better (see also below #5).

It takes several months of reverse engineering and testing before getting a new BIOS working. Please do not clog up the thread with useless posts asking if your specific card will get a new BIOS. Please do not harass the BIOS developers to go faster, release a particular BIOS, etc. This signature sticks with every post you make and helps other to keep track and understand what is going on. Then, reread the information.īefore you post a question please add a signature to your account settings reflecting your machine type, graphics card, and possible even the problem you have. It is HIGHLY recommended that you read through this post before asking questions. If you have not done this before, get some local help in advance and make a complete plan and make notes while reading through this page several times and check the thread!

#Macos runonly avoid detection for five manual#

This is not a plug and play solution! You need some macOS / Unix system administration knowledge, the ability to run programs from the Terminal app and some manual skills to assemble your iMac again.

#Macos runonly avoid detection for five upgrade#

IMac Late 2009 to Mid 2011 graphics card upgrade