I want to format Windows 7 and install Windows 8. I booted from the USB and went to the page where I can select which drives to format. I have 2 1 TB drives. The C drive which has windows and I want to format it and the D drive which has all my back up photos, music and videos. I deleted the system cache which is 100 mb and I don't know which of the two drives is the one that has windows. Is it in an alphabetic order. C drive is first and then D drive is below it?
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