USB Drives
FWIW:
I use a USB drive quite a bit. There have been times when it was only partially full and still not allow more files to be added. In September 5 issue of PC Magazine, someone asked about this same problem.
The guru answered that, "USB drives are typically formatted using the same FAT16 file system that's used for floppy disks, and they have the same problem. The root directory has a fixed size, and once it has been filled you can't add any more files. That fixed size may vary.
Fortunately, there's a solution: store files in subfolders. The number of directory entries in a subfolder is variable, increasing automatically as needed. You can't create a subfolder in a root directory that's already full, so move some files temporatily off the USB drive. Create a new folder on the drive and move all or most of the files into it. Once you start doing this, you may choose to create other subfolders and organize your files by category. The MAIN thing is to stop dropping everything into the root directory. Now you'll be able to take advantage of the full capacity of your USB drive."
I use a USB drive quite a bit. There have been times when it was only partially full and still not allow more files to be added. In September 5 issue of PC Magazine, someone asked about this same problem.
The guru answered that, "USB drives are typically formatted using the same FAT16 file system that's used for floppy disks, and they have the same problem. The root directory has a fixed size, and once it has been filled you can't add any more files. That fixed size may vary.
Fortunately, there's a solution: store files in subfolders. The number of directory entries in a subfolder is variable, increasing automatically as needed. You can't create a subfolder in a root directory that's already full, so move some files temporatily off the USB drive. Create a new folder on the drive and move all or most of the files into it. Once you start doing this, you may choose to create other subfolders and organize your files by category. The MAIN thing is to stop dropping everything into the root directory. Now you'll be able to take advantage of the full capacity of your USB drive."