Appendix D. Operating Hints
Backing
up
Minidisks
VM/PC
minidisks are managed as files with a
"filename. extension"
of
"userid.device address" and may
be
exist
on
either a fixed disk drive,
or
a diskette drive. You
may wish
to
periodically back-up your minidisks
to
prevent
data
loss
or
for security reasons. Since a minidisk
is
a DOS
2.00
file,
it
may
be
backed up with any
of
the backup
facilities available with DOS 2.00.
Minidisks on Diskettes
If
you define a minidisk
on
a diskette drive, you should not
remove
the
diskette while a command is executing. You
should wait for all commands you have issued
to
complete
before removing the diskette from the drive.
In
addition, any
time you insert such a minidisk in the drive, issue the
ACCESS
command
to
update the virtual storage copy of the
new minidisk's directory.
Also, if the CMS mini disk
to
be
used does
not
yet exist
on
the
diskette, you should issue the
CP
LINK
command, prior
to
using the CMS minidisk, to ensure
that
the proper DOS
file allocation takes place
on
the diskette prior
to
your using
the
minidisk. Failure to do this may result in unreadable data
on
the
diskette.
Transporting
eMS
Files
There are two methods
of
transporting CMS files between
VM/PC
systems. The first uses the
EXPORT
and IMPORT
commands; the second uses a minidisk defined
on
a diskette.
EXPORT
jIMPORT
Method
The
file
to
be
transported is
EXPORTed
to
a diskette (the
Personal Computer DOS filespec is given as
an
operand
of
the
EXPORT
command). The diskette is
then
carried
to
Appendix D. Operating Hints
D-l
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