On 2022-05-24, Nick Holland <n...@holland-consulting.net> wrote: > On 5/24/22 6:28 PM, Gustavo Rios wrote: >> May some one here suggest a documentation the explains this scenario ? I am >> in needof this. >> >> Thanks in advance! > > I've actually been experimenting with the UEFI OpenBSD and Windows combo, > though I suspect it is applicable to Linux, as well. > > Warning: I'm trying to avoid GRUB as my boot selector. UEFI is supposed > to be able to do this for us. So I would rather just use it. I don't > trust grub to do anything other than Windows and Linux (which is just > Windows re-invented badly). > > Short version: wow...there's a lot variety out there on machines. If you > want one answer for all hardware, that's not gonna happen. :-/ > That's about the only certainty I have at this point. Many UEFI systems > are only designed to boot Windows it seems, the idea of multiple OSs on > one disk didn't occur to some people..
rEFInd works pretty well - it's just a boot manager and still uses the standard OS boot loader to boot the kernel. I didn't like the icons so set it to "textonly", with it set to autoboot OpenBSD after a short timeout, which I found much more convenient than the built-in boot manager on the machine I wanted to dual-boot. Good information about the EFI boot process (and especially about CSM) on the website - https://www.rodsbooks.com/refind/
