If you Cannot Copy a File Even if your Hard Disk has a Vacant Space, then you better check what type of disk do you have. If you have FATS32 and you're trying to copy files to a NTFS hard disk, you can only copy less than 4GB single file. The only solution you have is convert your FAT32 disk to NTFS. By then, you can copy all the files even if it's 100GB.
So you want to reformat your disk now to NTFS and lose all the files? No need to worry, you can convert FAT32 to NTFS without losing any data.
Just head on the command prompt, type convert disk letter /fs:ntfs
For example, you want to format drive D, just type in the command promt
d/fs:ntfs, and DOS will do its job.
I will be providing screen shots for you to understand better in my next post!