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A comment on Kexecboot: Linux-As-a-Bootloader implementation based on kexec. Parent comment

Re:Kexecboot: Linux-As-a-Bootloader implementation based on ... by kevinoid on Sunday November 03, 2019 @10:40AM (#21434473)
For EFI systems, the kernel includes a boot stub which allows it to be booted directly by the firmware without an additional bootloader. AFAIK it's not possible to boot directly via BIOS/MBR.

https://www.kernel.org/doc/html/latest/admin-guide/efi-stub....

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Re:Kexecboot: Linux-As-a-Bootloader implementation based on ... by charlesap on Sunday November 03, 2019 @12:40PM (#21435303)
Or just turn on paging and page in your kernel from the MBR, ignoring the BIOS: https://github.com/charlesap/bootpager

EFI eliminates the need for such trickery though, and who doesn't have EFI these days?

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Re:Kexecboot: Linux-As-a-Bootloader implementation based on ... by nineteen999 on Sunday November 03, 2019 @06:59PM (#21437677)
> who doesn't have EFI these days?

VM's hosted on VMware ESX with the default settings comes to mind.

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Re:Kexecboot: Linux-As-a-Bootloader implementation based on ... by grapeli23 on Sunday November 03, 2019 @11:29AM (#21434803)
Minimal bootloader can fit in MBR. http://sebastian-plotz.blogspot.com/
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