On Mon, Sep 12, 2022 at 10:56:46PM +0200, Edgar Fuß wrote:
> Probably stupid question: I can switch the machine to UEFI. Is it easier 
> to debug things from there that from a BIOS boot?

My experience on a mac is that it helps a lot. You can printf() during
early boot, until you call UEFI's ExitBootServices. Removing that call
may cause a crash at some time, but it will let you printf() a bit 
further.

-- 
Emmanuel Dreyfus
m...@netbsd.org

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