Do I need to partition my C drive (have other raid1 drives installed)
Do I need to partition my C (300 Gb) driver that has Win 7 installed on it? If so can you explain to me why or attach a link that explains why. I have 2 other drives in this system that are Raid1 (250 Gb each) that I plan to use as my data drive. I am using the C drive for program files.
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A single partition will be fine. No need to partition modern drives. Install Windows and all programs on the "C" drive and as you have correctly done, store dats on the RAID1 set. This is exactly what I have on my computers.