Radio Shack TRS-80 Hardware Manual page 17

Chapter
4
Initializing
Your
System
with
HARDGEN
Although you nave
se!
up
and perhaps
turned
on
your
hard
disk
drives,
you
can,
as
yet.
operate your
computer
only
as a
floppy
disk system.
To
use
ynir hard disk
drives,
you must
first
initialize
your hard disk
System. This
Includes:
t Formatting
the
hard
disk
drluw
2,
Configuring
them
into
the
computer system
3,
Copying
TRSDOS
Version S
onto
youi
hard disk system
The
TRSDOS
Hard Disk
Initialization
Diskeiie
coniains
an
easy-
to-use
urogram
called
HARDGEN/BAS
("Hard Disk
System
Generator")
that
does
all
this
for
you.
Note:
HARDGEM
sets up a system
configuration
using
a
specified
pattern.
Because
these patterns are limited,
you
may
warn
10
configure your system
difterenify,
using
one
of
the alter-
nate
methods described
in
Appendices
A
and
B.
Both
methods
an& more
complicated, howeuer, anrl uv$
recommend them
onty
for
advanced
users
who
cannot meel
their
system
re-
quirements with the
normal use
of
HARDGEN.
Before beginning
the
initialization,
please read
the next section
carefully,
ft
explains
the
difference
between
physical'
and
"logical" drives.
It
is
important
to
understand
this
difference before
Initializing
your hard disk system.
Once
the
initialization
incom-
plete,
the operating
system experts
only
luyicat diive
numbers.
Technical information
on
the
hard
disk
initialization is
included
in
Chapter
6,
but you probably
will
not
need
it if
you
use
the
HARDGEN
program.
CauOon:
It
you are
reinitializing
your hard
disk,
first
back up
all
information
on
the disk
initialization
erases
all
information
you have on
all
your hard disk
drivee.
Ybu
should
also
make
backups
before
moving
the
equipment from
its
present location or
adding
new
hard
disk drives to your system.
Physical Drives
v
Logical Drives
A
physical drive
is
the actual place
of
hardware.
A
logical
drive
is
a
division
of
the physical drive
—
according
to
read/write
heads
that the operating
system recognize* as
a
complete
drive.
It
has
its
own
directory
and
files,
and
its
information
can be accessed
and backed up
jusi
as can the information
on
a physical
drive.
11