Today I had a warning balloon indicating that I was low on disc space. I was surprised as I had about 160Gb free last night. I investigated and discovered that I now only had 4.7 Gb free. Clearly something had written to my free space. I uninstalled most of my games, for which I have discs, and this gave me 57Gb free and enabled my computer to work a little better. I have WinPatrol and AVG 7.5 working in the background, but neither reported anything. I also scanned with SpyBot S&D, CCleaner and AdAware. None of these reported anything. I have tried system restore to two different points but these both failed. I will uninstall some more apps and try system restore when more disc space is available. Is there a way I can free up the parts of the disc that have been overwritten? I am using XP Pro SP2
I have gone through my hard drive, folder by golder. I was very surprised at what I found. One of my music folders, amounting to 109GB had been copied to another part of the same drive. I have absolutely no idea as to how this happened. It does however explain why none of the virus/malware applications spotted it. I am much happier now, because I don't think I have a virus. Any ideas how it happened. Do I need to do anything further?
Could be an accidental drag and drop copy error. Quite easy to do in Windows Explorer or My Computer and leave copying happening in the background. If this was the cause then as long as you remove the copied folder and files I don't think there will be a problem.