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ERROR MESSAGES
28.1 -- Diskette
Cont~olle~
E~~ors
drives
1-3
without
using
one
o~
the system
~unction$
and
without
ri~st
restoring the
read/~rite
head
on that drive.
Even
after
the
resident
operating
system
has
been
successfully
read
into
memorYJ
certain errors can occur
in
the
subseq,uent
initialization
proceduT'e.
During
initialization
the
resident
operating system cannot access
the
e~T'or
message
processor
since
it
has
not
been
initialized.
Messages
similar in format to those generated
by the diskette controller are
displa~ed
to
indicate
such
errors.
They
differ from the diskette controller errors in
that the second character of the two-chaT'acter message
is
a
non-numeric character.
The following errors can occur during
initialization,
but only after
has been read into memory.
Message
E?
Probable cause
This
error indicates that the RIB
o~
the resident
operating
sqstem
file
MDOS.SY
is
in error.
The operating
system cannot be loaded.
The
diskette probably is not an
MDOS
system
diskette;
or
the
system riles
have been moved from
their
o~iginal
pIa c e s .
Th
e
REP A
I
R
comma n d (
C
hap t e
l '
22) can be
used
to
identi~~
which
riles
are missing or if their places
have been changed.
EM
This error indicates that
there
was
insuFficient
memory
to
accommodate
the resident portion of the operating
system.
The
memory requirements described in
section
1.
1 should be
reviewed.
If
the
minimum
requirements
are
satisfied,
then the
existing
memory
should
be carefully examined ror bad
locations.
I
/
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