Protecting Your Data; Making Backup Copies; Write-Protecting Diskettes - Epson Equity III User Manual

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If you have a hard disk drive, take these additional precautions:

Never turn off the power to the computer when the hard disk drive

light is on. This light indicates that the computer is currently copying

data to or from the hard disk. If you interrupt this process, you can

lose data.

Never attempt to open the hard disk unit. The disk itself is enclosed

in an air-tight container to protect it from dust.

If you are going to move your computer (even to another part of the

room), run the MS-DOS program HDSIT to move the read/write

heads away from the recording area. See your MS-DOS (or other

operating system) manual for instructions.

Protecting your Data

There are two ways to avoid losing data you store on disk: you can

make backup copies and you can write-protect your diskettes.

It is a good idea to make copies of all your data and system diskettes.

Copy all diskettes that contain programs, such as the master system disk-

ettes that come with the Equity III, and use only the copies. Store your

original system diskettes in a safe place away from your working disk-

ettes. Copy your data diskettes regularly (preferably every day) to keep

them up-to-date, and store them away from your originals.

Your MS-DOS manual describes how to make a backup copy of

your MS-DOS system diskette. To make backups of your other

MS-DOS diskettes, use the DU (Disk Utility) program or the

DISKCOPY command.

If you have a hard disk, keep backup copies of all your program files

on floppy disks, and regularly copy important data files to floppy disks

as well. For more information on backing up a hard disk, see 'Using a

Hard Disk," below.

The right edge of a diskette has a small, rectangular notch as shown

in Figure 3-1. If you can see this notch, you can copy new data to the

diskette. If you cover the notch with an adhesive write-protect tab, you

can copy data from the diskette, but you cannot store new data on it or

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