Deleting Raid Volume - ASROCK Z68 EXTREME4 Installation Manual

Please note that you are only allowed to create one RAID partition at a
time under BIOS RAID environment. If you want to create extra RAID
partition, please use the RAID utility under Windows environment to
configure RAID functions after you install OS.

2.6 Deleting RAID Volume

If you want to delete a RAID volume, please select the
option Delete RAID Volume, press <Enter>, and then
follow the instructions on the screen.
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