This message was posted on behalf of Intel Corporation
CharlesRGrenz: Thank you very much for contacting the Intel® Rapid Storage Technology communities. We will do our best to try to assist you with this matter.
In regard to your inquiry, the RAID 5 volume is showing on Disk Management, since it is showing as un-allocated to fix this problem you just need to create a partition so you can use it on Windows.
Any further questions, please let me know.