I bought a 500GB SSD about a year ago. Before that I had an old laptop HDD with 297GB. Then I had cloned the data from the HDD to the SSD at a known one. Only now I have only 297GB on my SSD that I can access and 203GB that I can't access. I would be very happy about help.
You have to format the SSD again. Probably via disk management
He probably screwed up a bit when cloning and made the partition as big as possible. It should be expandable. So just expand it.
Yes, I also just checked. Could add 170GB. But there's also the drive information that the SSD only has 460GB instead of 500GB.
The 460 will be GiB and the 500 will be the mathematical representation of tens (500 gigabytes are 465,661 gibibytes). In addition, there's still a bit of administration going away. In the past, only two powers of two were used in the size representation of the memory, but at some point it bothered someone and you started to tidy up the units and define them more cleanly.