I do not even have a second hard drive so what is Local Disk (D:) all about?
That's almost definitely a second partition on the same physical drive, not an indication of another hard drive. You can verify this by checking the partition editor. (Go to "Create and format hard disk partitions" to verify.)
Have you manually stored anything on D:? If it's what I think it is (a partition created when you installed Windows), it seems unusual for it to be running low on space.
I haven’t put anything on it myself.
Do you know how I can stop the notifications from happening?
You could try increasing the size of the partition by about 100-200MB. Be sure to backup all data on the drive (good practice in general) before messing with partition sizes.
I'm not sure how to do that. There isn't even anything on the drive when I went to look at it...
Also, I'm not the only one with the problem. I saw Ninja with the problem.
Like root said it’s another partition if it’s anything like my gaming laptops I have an extra partition that’s there for system recovery under D drive.
If it looks empty when you go into the drive you can also go to folder options and click show hidden files and folders. That’s how I found out my D drives were recovery partitions. Had windows installation and other things in it.
Also if you use Dameon tools to get games make sure you don’t have anything mounted or it can also show up there. I’ve had it happen.
Windows likes to make these it seems. My laptop and desktop do this too, I think it's something Windows is doing. I would just leave the thing alone. It's not even 1GB, so there really isn't a point in messing with it.
You have 1 physical HDD in your system, the allocated space on that drive is split up into logical drives with each given a drive letter or name.
As to why it's full, its probably filled with windows updates or system restore points. There are software options you can use to make the partition larger by taking some from C: and giving it to D: But exercise caution and backup your important files before trying anything like this!