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#21
if you can see both drives, can you access the files? booted with Strelec and after entering diskpart then entering "list disk", do you see all the discs? At least the physical ones ( still not sure what you mean by virtual and your setup)
Boot problems typically are buried in the BCD, the Boot Configuration Data.
Few things are important: are you booting BIOS or UEFI?
What exactly do you understand by "virtual drive"? What's your current configuration/setup?
Another thing to watch out for is what is the storage device format: MBR or GPT?
the fact that you get this error message tells that there's something else buried somewhere.
First of all, is the RAID properly configured [what type?] Internal? external? how is it partitioned? what are the primary/logical drives?
does the BIOS and boot information points to the proper drive and partitions as an UEFI boot holds the boot information in a separate around 100 MB in size FAT32 partition.
Don't mess with the registry!
The problem is somewhere else!
Chances are you can really make it worse! Like saddling up a horse by starting from the rear...