>>>> "J" == jorma ojala
J> Hi again, I just installed Ubuntu 18.04.1 LTS (desktop) on the
J> very same server, with the four (4) disks in RAID5
J> configuration. Installation took place without a hitch.
J> Is there something else that I can do to help solving the initial
J> problem ?
Can you send me the dmesg info concerning disk initialization, lsmod and
lsblk on the booted Ubuntu? Did you setup the RAID 5 as software RAID
under Ubuntu or in the RAID controller BIOS?