On 4/23/25 18:07, Pier Antonio Corradini wrote:

I tried everything: the BIOS does not see any hard disk (single or in
pair with its own twin) if you do not first configure, in the LSI environment, either a RAID 0

So it is some kind of LSI RAID card. What Brand? model? Some of that
info should be visible in your "LSI environment" (I think you mean the
LSI bios menu?) which, I think, might be a separate bios menu from that
of the main motherboard, accessible via some keyboard shortcut during
startup.


The HDDs are not visible to the os until you configure your RAID device
in the LSI bios. Then you install your os to that RAID device as a
normal install. The os will not know it is running on a RAID AFAIK.


I think on one system like this, I needed to go into that LSI
configuration, delete my RAID, initialize the hard disks, then set up a
new RAID, after a corrupted install. After that, my os install completed successfully. Doing all that destroys all data you may have on those
hard drives. However, in case of a failed new os install that is usually
no concern.

(when there is only one hard disk) or a RAID 1 (when there are two
hard disks). Leaving Debian 12 to do the partitioning does not create
/boot and therefore the Grub installation fails. If you create /boot
(and all the other partitions) manually, Grub is installed but the
operating system does not load and when you turn it back on, the RAID
no longer exists in the loading console. Moreover, if you create, in
the partitioning, a vg0 unit, the individual partitions already made
are transformed into others and the entire newly created structure is destroyed and the new one becomes unchangeable.
A real nightmare!
PA

--

Titus Newswanger
Curtiss WI

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