Custom Search
Audio      Browser      Clock      Driver      DVD      Files      Hard Drive      Hardware      Keyboard      Maintenance      Miscellaneous      Monitor      PC memory      Power supply      Printer      Processor      Screen      Software      Windows       Links                                                 



Spurious "Disk Full" message from USB drive

Question : I have a Lexar Jump Drive with 512MB. It shows 128MB used but will not allow any more files to be added; it displays the message "disk full." How can I get this drive to accept more data?

Answer : This exact problem cropped up when Microsoft first introduced long filenames. The root directory of a floppy disk has precisely 224 slots to hold directory entries. Before long filenames, that was enough for 224 files, and very few people ran into that limit. But each long filename takes from two to twenty directory entries, depending on its length. Some people have been getting "disk full" errors even when a floppy disk was only half full. 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; in a sample I tested the limit was 510 entries.

Fortunately, there's a simple solution: Store your 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 temporarily off the USB drive. Create a new folder on the USB drive and move all or most of the files into it. Once you've started 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.


Scratch around for disk space

Refresh your Windows Explorer

Switching PC boot-up from C: to A: drive

Avoiding storms in your ports

Defragmenting in Safe Mode

iDisk on-line file storage

Rescue your hard drive

Safely removing reluctant hardware

The hard life of a hard drive

Still pining for floppies

Wiping old hard disks

Dead Drive

Spurious "Disk Full" message from USB drive

Unreadable hard drive

Drive name oddity

HD recordings need more storage space

Wipe your PC for safety's sake

Resize drives for extra room


E mail
IP address
Search Engines


Sites of similar fields are welcome for exchanging links