Epson EQUITY 3865X/20 PLUS - Manual (Page 88)

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.
See your MS-DOS Reference Manual for instructions on using
these commands.
Using a Hard Disk Drive
Using a hard disk is similar to using a diskette. However, the
hard disk provides several advantages:
A 40MB hard disk can store as much data as approximately
thirty-three 1.2MB diskettes or thirty 1.44MB diskettes,
and a 100MB hard disk can store as much data as
approximately eighty-two 1.2MB diskettes or seventy
1.44MB diskettes.
Your computer can perform all disk-related operations faster.
You can store frequently used programs and data files on the
hard disk, eliminating the inconvenience of swapping
diskettes to access different files.
The added storage capacity makes it easy to move back and forth
between different programs and data files. However, because it is
so easy to add programs and files to your hard disk, you may find
yourself trying to organize hundreds of files.
MS-DOS lets you keep related files together in directories and
subdirectories so they are easy to find and use. See your
MS-DOS Reference Manual for instructions on managing your
files and directories.
A hard disk must be partitioned and formatted before you can
use it. Be sure you have performed the procedures in your
MS-DOS Installation Guide to prepare your hard disk for use.
3-22 Using Your Computer