ASROCK Fatal1ty H87 Performance Installation And Configuration Manual page 16

Press <Y> to complete the setup of RAID.
After the completion, you will see the detailed information about
the RAID that you set up.
Please note that you are only allowed to create one RAID
partition at a time under BIOS RAID environment. If you want
to create an extra RAID partition, please use the RAID utility
under Windows environment to configure RAID functions after
you install OS.
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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