I have a 500gb SSD C: drive that holds the OS and program. A separate D drive is to hold the data. Overtime, the C: drive is over half used. I have a similar set up with another laptop and the C: drive is taking up only 125 gb. I want to trim my C: drive to similar size as my other machine. That is, I want to put a 250 gb SSD in it and use the 500 gb for something else. How can I trim my C: drive safely without causing any problem? I use Photoshop and Adobe Premiere Pro mostly these days. Thanks.