Hi, My Presario sata hard drive stop running last year, and I asked a guy if it can be salvaged as a memory unit. And it could. so recently I finally found a case for it and made it an external hard drive with 120gbs. I checked it last night and it said that that was the amount I had. Unfortunately, I just plugged it in again and it says I only have 8.25gbs of room. This device has a backup button on, so Im almost positive that me pushing that button caused it to change from 120 to 8.25. Is there a way to turn it back to a 120gb harddrive?