Epson 3865X Plus - Manual (Page 89)

Making Backup Copies
It is important to make copies of all your data and system
diskettes. Make backup (or working) copies of all diskettes that
contain programs, such as the original Reference, MS-DOS, and
Utility diskettes that came with your computer, and use only
the copies. Store the original diskettes in a safe place away from
your working diskettes. Also, copy your data diskettes regularly,
whenever you revise them, to keep them up-to-date, and store
them away from your originals.
If you have a hard disk, you’ll probably store the programs and
data files you use regularly on the hard disk. Keep backup copies
of all your program files on diskettes, however, and regularly
copy important data files to diskettes as well.
You can copy your data (text and program files) in several ways:
You can use the COPY or XCOPY command to copy
individual files or groups of files.
You can use the DISKCOPY command to make an exact
duplicate of a diskette.
You can use the BACKUP command to back up hard disk
files to diskettes. Because BACKUP can split large files
across two or more diskettes, it makes more efficient use of
diskette space than COPY or XCOPY. It also allows you to
back up files that are larger than the capacity of your
diskettes.
See your MS-DOS Reference Manual for specific instructions
on using these commands.
3-22 Using
Your Computer