Kjetil Kjernsmo schreef op 24-08-2017 22:42:
Now, I'm out of ideas, and I will be very grateful for any help.
Can't help you right now, just saying that I did once install a Debian 7
system using the Debian text-mode installer and it allowed me to create
the raid array myself using the installer.
At first I had a non-raided /boot. Only root (and other partitions) were
on RAID.
Later I turned both /boot partitions (the partition tables were
identical) into a RAID 1 also. I installed Grub on both /dev/sda and
/dev/sdb.
Both disks had a GPT Bios Boot Partition of 2MB at the start.
The /boot partitions were some 250MB in size or similar.
But this system is offline so I cannot quickly copy any config.
There was one grub configuration for both disks. I manually installed
onto both, and subsequently both disks would boot the system (if the
other was gone).
If you really want I can see if the system turns itself on what RAID
config there might be but the RAID config I think GRUB did not take from
any configuration file.
I am sure it generated it by sensing.
But I can show you the Grub config of a (now) Debian 8 system that boots
from a RAID 1 /boot.
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