[systemd-devel] howto switch from grub2-bios to systemd-boot

[Reindl Harald]

Am 04.09.20 um 17:44 schrieb Lennart Poettering:
> On Fr, 04.09.20 17:10, Reindl Harald (h.reindl at thelounge.net) wrote:
> 
>>> No, that's not supported in sd-boot. A boot loader is a boot loader,
>>> it should contain a fragile storage stack. It's kinda what sd-boot is
>>> supposed to do better than grub.
>>
>> well, a boot loader should just *load* and not write anything so RAID1
>> is technically no problem and it shouldn't matter which of the 1, 2, 3
>> or 4 disks is there unless one survived.
> 
> Robust boot loaders typically want to write boot counters to disk, so
> that they can automatically revert back to older versions of the
> OS/kernel if it doesn't boot. Thus some form of write access is
> necessary if you care about robustness.

well, in the past 15 years i had zero need for automagic "let us boot
the last kernel" given that ILO and VMs exists

but i had a ton of dying disks, all an RAID systems which just boot as
if nothing has happened at least when your machine is not infected with UEFI

if the system is 300 kilometers away from you i can call a trained
monkey and tell him "connect a screen and a keyboard and hit cursor down
until a menu comes and then please select the second entry"

i can't instrcut a trained monkey on a phone how to boot from a
live-media and restore the boot-loader