Here are the answers to your questions:
1. When using VMWARE, the operating system validations are done by the developer directly and according to their website; this board has not been validated for version 6.0.
2. To enter the RAID BIOS, first disable quiet boot in the BIOS main tab. Then go to Mass Storage configuration and select the RAID controller you are going to use. RSTe (CRTL+I) and ESRT2 ( CRTL+E). Save changes, reboot system and enter the RAID BIOS during POST.