Building new PC SSD/HDD question

bubba930

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Aug 24, 2015
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4,510
In a couple of day all my parts for a new PC should be here, I will be installing a new SSD and using an old HDD from my current PC. My question is, after I install my OS to my SSD will I be able to just plug in the HDD after and format it then, or do I have to format it before hand? I'd highly prefer the former if at all possible!