If you copy or move a file from a drive formatted
with HPFS or JFS to a drive formatted with the FAT file system,
the system might truncate the file name according to the FAT 8+3
naming restriction. The original long file name is then saved as
an extended attribute of the file. However, if you look at the
disk with a different operating system, you will only be able
to see the file's short name.
Be aware that diskettes are always formatted with the FAT file
system.