Thank you very much for contacting the Intel Communities Team, CawaSPb.
In this case, as you mentioned, Intel® Rapid Storage Technology will recognize the drives but, is unable to verify in which RAID were some of them, this should be caused by the motherboard that is not recognizing how the drives are set or in which RAID they should go to. At this point, please get in touch with MSI* support to double check this issue with them.
Thank you for the answer!
I'm not sure it should be addressed to the motherboard vendor since both motherboards are based on the same Intel P55 chipset with integrated Intel RST functionality.
Intel Raid management utility (Windows and BIOS) is provided by Intel.
It's correct that originally an issue was probably caused by wrong disks order and how they are attached to SATA ports, but the question was what to do with this when it already happened (reattaching disks to ports in a different order didn't help and kept disks in the original state (member/non-raid).
It seems, that just reassigning disks could solve the problem.
Unfortunately, Intel doesn't provide the solution for this issue even people meet the problem for years.
The third party tool may be used instead:
The solution is also mentioned in one of the other related threads:
https://communities.intel.com/thread/32061 (see reply 15)
The problem with that third party tool (even if it works as a charm) is that overall process is not non-disruptive.
It requires setting disks which are mentioned as a raid set members to non-raid and creating Raid set from the scratch. That forces Intel RST BIOS utility to create new empty partition table and writing it to the newly created raid set. That drops existing data.
TestDisk tool searches through the newly created raid set for deleted partitions and gives an ability to store recognized partition information in a partition table.
This tricky way requires advanced knowledge and really may finish with complete data loss.
That would be really good if Intel RST BIOS utility or Application give an ability to manually set non-raid disks as a raid members and set the order of disks in a raid set (then check if that really returns raid set into the correct state).
This may be a great advantage and can be recognized by users as an effort to solve their problems.
In this case, allow me to get more information about your system for me to perform a deeper research about this issue. Please provide me with an Intel® Rapid Storage Technology report and attach to the thread the .txt file that the Intel® System Support Utility will generate. To attach a file, you must click the “Attach” option on the bottom right-hand corner of the response box.