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Appendix E: Configuration Utility
E–4
DAS System User Manual
User-created files, such as saved setups, reference memories, and trigger libraries
remain in place when you save or restore an image. The files do not become part of
the saved image and are not replaced when you restore an image. Therefore, when
you convert a system from one mode of operation to another by saving then
restoring or installing new system software, existing user files that were present in
the original mode will still be present in the new mode. It is not necessary to save
the user files separately when switching modes, (although doing a backup before
such a major change is always a good idea). Likewise, saving a system software
image does not make a copy of the user files and is not a substitute for a backup.
Be aware that saving an image of the current system software causes the software
to be removed. Therefore, you must install new software following a Save
operation before returning to normal operation. You can install new software
either from the floppy disks or by restoring a previously saved image.
Saved images of system software vary in size according to the amount of
optional system software and application software installed. The minimum size
is approximately 14 Mbytes. If there is insufficient room on the hard disk to save
the complete image, the save operation will abort, leaving the current system
software intact. Saving an image takes approximately three minutes.
The Available: field at the right end of the save entry in the Main menu shows
the type of system software that is currently installed and available for saving, if
any. The value None signifies that the system software has not been installed or
has been removed as the result of either a save or operating mode change.
You will be prompted to verify your actions before the save operation occurs. If
the save operation cannot be carried out, you will be returned to the Main menu.
Selecting item R from the Main menu lets you restore a previously saved image of
system software. This operation is useful when you plan to change the operating
mode of the system. You can save an image of the system software supporting the
current mode of operation before installing new software. If you later decide to
return to the original mode of operation, all that is necessary is to restore the image
from the hard disk. If you will be switching modes often, you can alternate between
saved images rather than reload software from the floppy disks.
NOTE
. You must have an image saved on the hard disk before you attempt to
restore an image; if not, the current image will be lost.
Restore Image of Saved
System Software
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