Question: can Windows 7 clone the OS HDD to new SSD?
i.e have a new SSD to introduce for the main OS in my windows 7 PC, and it is of a different size to my existing HDD…
Answer: As long as the size of your current actual data is less than the size of the new SSD, and your cloning software lets you resize (most do, even downsize), you will have no problems. If not, you can use a partition manager software to downsize first, then clone it.
http://clonezilla.org/downloads.php
http://www.partition-tool.com/download.htm