Gigabyte GA-X99-UD4 User Manual page 72

Delete RAID Volume
To delete a RAID array, press <Enter> on the volume to be deleted on the Intel(R) Rapid Storage Technology
screen. After entering the RAID VOLUME INFO screen, press <Enter> on Delete to enter the Delete screen.
Press <Enter> on Yes (Figure 8).
Figure 8
Configuring SATA Hard Drive(s) - 72 -