Select this option to have AxMan split the file into pieces based on the amount of space available on the destination directory. When splitting to floppies, this option will take maximum advantage of the space available on each floppy, without requiring that the floppy already be empty. Therefore, each pieces size will be dependent upon the amount of space available on the floppy disk. When writing to a fixed disk (hard drive), this option will effectively be the same thing as copying a file from one directory to another.