User's Manual Part 3

PERFORMING DOWNLOADS
Direct Operating System Downloads
86 OMNI 3600 REFERENCE MANUAL
• Use system mode menu options to clear the entire RAM or the RAM of Group
1 on the receiving terminal (as necessary).
Checklist for
Effects on Files
and Settings in the
Receiving
Terminal
• A full OS download replaces the existing OS and erases all application files
from the Group 1 RAM.
• A partial OS download returns control of the terminal to system mode and
does not erase application files from Group 1 RAM.
• Protected records in the CONFIG.SYS file(s) of the receiving terminal —
keyed records that begin with * or # — are not erased.
• An OS download does not overwrite terminal configuration settings, including
the current date and time, passwords, and modem country code. If required,
you can download new terminal configuration settings together with the OS
files.
• The certificate tree that exists on the receiving terminal is not modified unless
one or more new certificate files required to authenticate the new OS are
being downloaded to the terminal. When new certificates are authenticated on
the receiving terminal, the data they contain is stored in the certificate tree and
the certificate files are deleted from the Group 1 RAM.
• The certificates and signature files required to authenticate the new OS are
processed by the file authentication module of the receiving terminal the same
as application files.
• When the terminal restarts and the new OS files are processed, they are
moved out of the Group 1 RAM into the Group 0 area of the Omni 3600 file
system.
Direct Operating
System Download
Procedure
The procedure in Table 16 describes how to perform a direct operating system
download from a host computer into the Group 1 RAM of a docked Omni 3600
terminal.
Steps are performed directly on the Omni 3600 terminal. Notes provided in the
Action column indicate actions to perform on the download computer side of the
data transfer.
NOTE
Download, clear, and defragment operations cannot proceed in system mode if an
application is executing. If you see the message
DEVICE BUSY, PLEASE RESTART
STAND ALONE
, press the cancel key and restart the terminal from SYS MODE MENU 1.
When you see the copyright screen, enter system mode within three seconds
(before the application begins).
NOTE
In Table 16 and in the following procedures, only method-specific steps are
included. For a description of the first five steps required to enter system mode
and display
SYS MODE MENU 2, please refer to Table 14.