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kami83

macrumors newbie
Original poster
Jun 19, 2020
5
1
Hi,

i am trying to run refind with shim or Preloader on my Macbook Pro 2020. Without Secure Boot it is no Problem to boot the refind an just use this bootloader to start Catalina/Windows and Linux. But if i activate in the Recovery Mode Secure Boot with Middle Security Mode it always crashes and i have to reset the Bootloader to the MacOS Volume.

I have now tested different versions of shim-signed with Microsoft CER and the Linux Foundation Preloader with Hashtool. But at all times it doesn't start the shim or Preloader when Secure Boot is activated. I also disabled SIP with the csrutil and i tested my "bless" command with the Windows Bootloader bootmgrfw.efi. (bless --mount /Volumes/ESP --setboot --file /Volumes/ESP/EFI/refind/shimx64.efi --shortform). If i use the bless cmd with the bootmgrfw.efi instead of shimx64.efi it works fine and Windows is booting. But shim or Preloader never works. Maybe someone can help me with this. I tested the Ubuntu, Arch and Fedora and shim-signed-0.2 efi file. None of this files works.

Thanks a lot.

Cu kami83
 
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