OS/2, eCS & ArcaOS - Technical > Setup & Installation
Switch from CSM to UEFI
Per E. Johannessen:
I have Win10 but since it's been run with CSM it has not created any ESP partition. AFAIK updating Win10 to Win11 requires UEFI so I assume that the updating process will create the ESP partition, (the Win10-disk has enough free space).
Before updating to Win11 I think I will disconnect the AOS-disk and only have the win-disk and another empty disk in the system.
If the win updating goes well I'll install latest AOS to the empty disk.
Finally I plan to re-connect the older AOS disk and wonder if there is something I have to do manually or will it be seen automatically and added to whatever boot manager AOS 5.1 sets up?
The graphics card is a Radeon RX 7800 XT and I have no idea about the size of the frame buffer or where it is put.
I have checked https://www.arcanoae.com/wiki/ and the info is good for a new installation however I initially had a hope of "converting" an existing AOS installation to UEFI. Couldn't find any info for that scenario so I'll go for a new 5.1 installation.
ivan:
Another thing to consider is changing the mother board to one that takes an AMD Ryzen processor with built in graphics. I converted all my computers to AMD processors, my main unit runs a 30 inch 2560 x 1600 screen without problems. Also, as Dave says be very careful with UEFI graphics cards - they are not all created equal and may not work with OS/2 - ArcaOS..
Strange as it may seem I was reading up about the problems of converting win 10 to win 11 because some friends of mine were thinking of doing so and it appears that there isn't any real advantage in doing that.
Dave Yeo:
--- Quote from: Per E. Johannessen on October 29, 2024, 02:01:12 am ---
Finally I plan to re-connect the older AOS disk and wonder if there is something I have to do manually or will it be seen automatically and added to whatever boot manager AOS 5.1 sets up?
--- End quote ---
Without using CSM, no. I currently have CSM enabled and am using UEFI boot. My boot manager, rEFInd, can load airboot allowing me to do a BIOS boot. If I disable the CSM, only pure UEFI booting is possible.
You likely would have to go into the BIOS to toggle CSM on to boot your older install.
Roderick Klein:
--- Quote from: Per E. Johannessen on October 29, 2024, 02:01:12 am ---I have Win10 but since it's been run with CSM it has not created any ESP partition. AFAIK updating Win10 to Win11 requires UEFI so I assume that the updating process will create the ESP partition, (the Win10-disk has enough free space).
Before updating to Win11 I think I will disconnect the AOS-disk and only have the win-disk and another empty disk in the system.
If the win updating goes well I'll install latest AOS to the empty disk.
Finally I plan to re-connect the older AOS disk and wonder if there is something I have to do manually or will it be seen automatically and added to whatever boot manager AOS 5.1 sets up?
The graphics card is a Radeon RX 7800 XT and I have no idea about the size of the frame buffer or where it is put.
I have checked https://www.arcanoae.com/wiki/ and the info is good for a new installation however I initially had a hope of "converting" an existing AOS installation to UEFI. Couldn't find any info for that scenario so I'll go for a new 5.1 installation.
--- End quote ---
The reason its not a common support scenario is indeed because if it works it works. Its also not that easy to automate conversion to a UEFI system. The primary thing is that you need a new partition and converting the HDD to gpt disc layout is more complex yet again (if you want this). Could Arca Noae have developed this code ? Perhaps. But its pretty complex code.
Roderick
Neil Waldhauer:
Perhaps it isn't that hard. I think you could do this experiment.
Install ArcaOS 5.1 on the system you have now.
Install the new graphics card and switch to UEFI
Install ArcaOS 5.1 on a different volume.
Compare the Config.sys. I think only a graphics has changed.
Make that change and copy the files it refers to to the first ArcaOS installation config.sys
See if the first installation now boots under UEFI
Make sure you have space to make the new boot volumes and also the EFI volume.
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