Hello, everyone!
This is a case about solving the "Create and format partition failed" issue.
Problem discretion: Can't install CNA 6.5.1.
Root Couse: Create and format partition failed.
Solution: change IBMC Boot Mode from legacy Bios to =>UEFI.
Server : 2288H v5
RAID : RAID1
Disks : 2 SSD disks

Hope this helps!