I was moving over a 4GB video file when it stopped moving over and started complaining about there not being enough space on the awaiting drive. Since there were about 300 gigs left I looked into the problem which apparently was due to the drive having file system FAT32. It's an external drive, preformated, so I searched around a while to see if I could find a way to switch file systems without losing any data. In my noob era I remember formatting a drive with data already on it and it didn't work so well, all the files disappeared, so I searched for another option and found one in the form of:
CONVERT D: /fs:ntfs
Just type that into CMD with D switched to the drive letter of choice, and boom, the file system is changed! It's a piece of cake, and no data lost either, though you should keep in mind that once FAT32 --> NTFS, there's no easy way to reverse the process. The process above simply converts the file system, if you need to switch back you'll need to format it to FAT32, which will clear any existing files at the same time.
I didn't know anything about file system formats before this, but now I do, so for those of you who still don't here's a quick update. FAT32 is an old system, it can't handle files larger than 4GB. NTFS is newer, and can handle files as large as the drive itself, or at least 12GB. If you don't have any big files there's no reason to switch to NTFS, nor is there any reason to switch to FAT32 if you already have NTFS, and if you get an error about the drive you're trying to convert is dirty, use the commando below, where D is your drive letter:
CHKDSK D: /F
I mixed up NTSC and NTFS while trying to find an answer, the former is a video format or standard on media discs. PAL is another common standard, used in Europe, which is great since you can't mix up the acronym with any other file systems I know of, lmao.