Radio Shack TRS-80 Hardware Manual page 53

Example #2
• Logical Drive
2
(1
25 megabytes}
the
last
head on
the
primary
drive,
• Logical Drive
3
fl.25
megabytes)
the
last
head or
ihe
secondary
drrve.
Study the display
to
be
5une you entered
Li
ie
uurrsut data.
Then
press ihe space
bar
to
conlinue.
11,
Type V ENTER)
if
Ihe configuration
is
acceptable.
16 complete
ihe
mitigiizatBCA
toUow Steps
13
through 16
of
ihe
main
HARDGEN
program.
Assume
thai
TRSDOS
and CP/M*
are
to
share a
system
thai
has
two
5-
megabyte
hard driwss
and one IB-megabyte
hard
dfiva that
Is
terminated
as the
tesl
physical
hard
drive.
Three
restrictions are
imposed by both
TRSDOS
and CP/M:
•
The
two systems cannot be on Ihe
same
physical hard
drive.
•
TRSDOS
6
must occupy
the primary
drive
so
ibat
yoj
cart
boot
TRSDOS
as the system hard
drive.
•
A
hard
drive
for
CP/M
must be
previously tormatled under
LDOSl
or
TR3DOS
b^ause
CP/M
dwes
iiiM
haws a
tor-
mat
routine
for
the hard dnve.
Suppose
you analyse
the storage requirements
under
TRSDOS
and
CPtM
and decide
that you
need
Ihe
tallowing.:
• At least 15
megabytes
of
storage under
TRSDOS,
on
2
physical
drives,
in
7
logical
drives with a
distribution that
is
as
even as
possible.
•
At least 5
megabytes
of storage
under CP/M. on
1
logical
hard
drlve.
These
slo
rage
requi
reme
n ts
i
mply
t
halt
he second
of
the 3 d
rives
will
be
the
one
to
contain
CP/M.
*
CP/M
is
a
registered
trademar*
ot Digital
Research.
t
LDOS
is
a
trademark
of
Logical
Systems,
Inc.
48