I am new to OMV.
However I encountered an issue whereby the latest version of OMV 5 stalls and ultimately fails to reboot whilst running the above hardware/firmware config when using UnionFS freshly configured.
I merged the four SSD labelled A B C D into one named ROOT.
I have done this 3 times. It is now I understand how to image an original setup SD and then I can reload it so I am safe to reboot from the imaged card but do I need to do this every time???
Please see below steps taken after reboot. I cannot reenter command line with CTRL + C or as seen by entering ENTER it just stalls.