> One day my Local Disk hard drive read the free space as 12gb. A few days
> later it decreased to about 8gb. Today i added a few more files, but instead
> of decreasing as it usually would, it now said i had 9gb. This constantly
> fluctuating hard drive space has been happening a lot to my OS drive, but
> never to my storage drive. Other times it read about 6gb, then later about
> 11gb, and i didn't even delete anything. Is this a sign that my hard drive is
> failing? Or has this something to do with Vista?
More than likely, it's System Restore creating restore points.
Every time you get a Windows Update, even if it's just an update
for Windows Defender (those restore points can be stopped) a
restore point is created. Most of the time, when you install or
even uninstall a program, a restore point is created. When the
restore points get to a certain size, some of them are deleted.
If this is a new installation or new computer and you are setting
it up, installing software, you are going to see those type of free
space fluctuations. You can use Disk Cleanup to manually delete all
but the last restore point.