I have a sandisk 120gb ssd and my hdd has 138gb on it now. I only want to put my os on the ssd, not my data. If need be I know I can clear out enough junk to get it under the 120, but as I said I only want the os on the ssd. I can do a clean install of windows 10 on the ssd, but not sure how to setup the hdd as it has windows 10 on it along with all my data. The hdd is a 1tb drive and I also have an extra one that is empty.