Cannot install Fedora 36 on iMac

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I have a 27" 2012 iMac which is currently running on Ubuntu-Mate and I am trying to install Fedora 36. However, I am having issues with the partitioning. My current HDD is 160GB out of which 60GB is assigned to the root partition and 100GB is assigned to the /home partition and EFI partition is around 600MB. I tried to use the existing partition, but I am getting the below error message after completing the partitioning step.

“Failed to find suitable stage1 device. Apple EFI partition cannot be of type efi.; Apple EFI boot partition cannot be of type ext4.; Apple EFI boot partition must be mounted on one of /boot/efi.; Apple EFI boot partition cannot be of type ext4.; Apple EFI boot partition must be mounted on one of /boot/efi”.

The gparted layout of my HDD is below.

a7c8ee57b390696280b852873998f1a0620e97f5.png
a7c8ee57b390696280b852873998f1a0620e97f5.png775×297 32 KB

As we can see, the ESP partition is already formatted as fat32, but Fedora can’t see that. To me, it appears to be a bug in Fedora installer.

Can someone help?

Thanks in advance.

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@pnbalaji Hi, welcome. Did you try the /boot/efi as in the error message?

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@jpbn Yes, I did set the mount point of the ESP partition as /boot/efi only and it was already formatted as fat32 and it is currently running Ubuntu Mate.