Radio Shack TRS-80 Model 4P - Page 20

Chapter
3
Using TRSDOS
to
Prepare
Diskettes
TRSDOSs
major
role is
that of a
file
cterk.
It
organizes each diskette like a filR
nahinet
and
stores your
information
in 'disk
files;
similar to
fife folders.
TRSDOS stores
the
disk
files
wherever there i§
space. Files
and
even
parrs of files may
be
stored
almost
anywhere on Hie
diskette.
The
key
to where the files
are located
is the
direc-
tory,
which
TRSDOS also
puts on the diskette.
The DIE
and
FREE
Commands
If you
turned
off your Mode) 4P at the
end
of
Chapter
2,
turn
it on again. Then
insert your
master
TRSDOS
System Diskette
as
before,
To lei
you see what riles are
on
your diskette,
TRSDOS
has
a
directory
(DIR)
command-
Start
up TRSDOS
and
at "TRSDOS Ready.' type:
Dlft
S
STEKI
TnSDOG displays
the
names of
all "visible,"
non -system
files
lhat are stored
on
your
disk-
ette.
Now
type:
dir
(SfU
(BQEE
TRSDOS
displays
the names of qll
files
on the
diskette,
including
system
files
and
invisible
files.
Study
these
files
for a
moment.
In
particular,
note
the BACKUP
and FORMAT
fifes.
You will
use
them
later
in this chapter.
TRSDOS also has
a
FREE
command, which
shows haw
much
"froe"
(available) space
you
have on a
diskette.
At' TRSDOS Ready!'
lype;
FREE
fflEE)
15