Hard Disk only shows part of data
Hi,
I have a 500 GB hard disk on my Compaq Desktop. A few days ago I disassembled by computer to dust it off. But after returning everything the hard disk had a problem. I could only see 100 GB of data and 400 GB free space. While actually I had 300 GB of data on the Disk. How could I have lost data just like that? Is the data deleted? How do I recover it?








