Pier Antonio Corradini wrote:

You can find everything about the LSI system I described at this link: https://www.fujitsu.com/global/imagesgig5/b7fy-2331-01en.pdf (see page 59).

This document is too generic; it does not tell us the most
important part: which chipset family is in use.

LSI's 2008/3008 family is different from the LSI's
3Wware-purchased chipset. They use different drivers.

If you have a 2008/3008 family board, you can probably flash the
IT-mode firmware on it, and then it will act as a normal, highly
capable SATA/SAS controller without RAID features. This is
best for mdadm, btrfs or ZFS.

If that's not the case, you will need to configure each disk as
its own RAID unit.

Maybe I didn't understand this software well or maybe I should have found an old page of Fujitsu.com that no longer exists and that would have helped me manage the configuration of LSI for Linux.

The AI ​​recommended me a very long manual configuration procedure in which Grub was installed after I had installed /boot on each of the two hard drives and had partitioned each disk identically.

I don't understand if I'm doing something wrong and where...

That's saying the same thing three times. I don't mean to berate
you, but this is very important:

========================================================================
if you do not understand something, using an LLM will not teach
you the subject and will very likely cause you to do something
wrong. And you will not understand what you did wrong, or how to fix it. ========================================================================

-dsr-

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