Cause

image\BULLET.gif If the file is on a floppy disk, the disk may have been removed from the drive.

image\BULLET.gif If the file is on a hard disk, the disk structure may be corrupt.

What Can I Do?

image\BULLET.gif If the file is on a floppy disk, check the disk is correctly inserted in the drive.

image\BULLET.gif If the file is on a hard disk, run your disk diagnostic utilities to check for a corrupted disk structure.