Boot Camp doesn‘t support RAID configurations

Boot Camp doesn't work with RAID configurations.

RAID configurations that aren't supported include Microsoft Windows' built-in software RAID, hardware RAID cards (such as Mac Pro RAID and Xserve RAID cards).

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To partition your disk and install Windows using Boot Camp Assistant, the disk must be a single partition which is formatted as a Mac OS X Extended (Journaled) volume. If you have already partitioned your disk using Disk Utility or another utility, you cannot use Boot Camp Assistant until you restore your disk to a single-partition Mac OS X volume.

Also, Boot Camp Assistant works only with internal disks. You cannot use Boot Camp Assistant to partition and install Windows on an external disk.

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