R720xd raid change or disable?

i just got a refurbished R720xd with server 2019 datacenter, 2 processors, 8 drives.  When it came up it was configured as raid 6 with all 8 drives in one big c: drive.  I really don't need raid and want to get back to 8 separate drives.  Is there a way with the built in bios and tools to convert the raid 6 down to no raid without losing the pre-installed software (they didn't include media only a product key)?  If not, what is the easiest way to get to the 8 separate drives with no raid??