Cisco Headend System Release 2.7 Installation Guide
Restore the Old System Release After a DNCS Upgrade Reboot Failure
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Restore the Old System Release After a DNCS
Upgrade Reboot Failure
In rare circumstances, the DNCS upgrade may fail due to a hardware failure or some
other issue while the software is installing as part of a reboot. The Application Server
is powered off and any RNCS servers should still be shut down to the boot prompt
(ok) at this point in the upgrade. If the DNCS upgrade should fail during the
reboots, and you have to roll the DNCS back to the pre-upgrade disks, you will also
have to roll the RNCS back to the pre-upgrade disks as well.
Note: Depending upon what the failure was and when it occurred, you will either
be at a boot prompt (ok) or an Administrative prompt (#).
Follow this procedure to restore the system software that was in place prior to an
unsuccessful upgrade to SR 5.0.
1 Write down the version of the system release you are trying to restore.
other issue while the software is installing as part of a reboot. The Application Server
is powered off and any RNCS servers should still be shut down to the boot prompt
(ok) at this point in the upgrade. If the DNCS upgrade should fail during the
reboots, and you have to roll the DNCS back to the pre-upgrade disks, you will also
have to roll the RNCS back to the pre-upgrade disks as well.
Note: Depending upon what the failure was and when it occurred, you will either
be at a boot prompt (ok) or an Administrative prompt (#).
Follow this procedure to restore the system software that was in place prior to an
unsuccessful upgrade to SR 5.0.
1 Write down the version of the system release you are trying to restore.
__________
2 Depending upon the prompt that is displaying, choose one of the following
options to reset the boot device to the old system release.
If you are at the boot prompt (ok), type the following command and press
Enter.
Enter.
setenv boot-device disk:a
If you are at the Administrative prompt (#), type the following command
and press Enter.
and press Enter.
eeprom boot-device=disk:a
3 Depending upon the prompt that is displaying, choose one of the following
options to boot/reboot the system.
If you are at the boot prompt (ok), type the following command and press
Enter.
Enter.
boot
If you are at the Administrative prompt (#), type the following command
and press Enter.
and press Enter.
shutdown –y –g0 –i6
4 Complete the Attach Mirrors (on page 112) procedure.
5 Repeat steps 2 and 3 for any RNCS servers that need to be restored to the original
5 Repeat steps 2 and 3 for any RNCS servers that need to be restored to the original
system release.
6 Power on the Application Server. After a couple of minutes, the ok prompt
appears.
7 Type boot and press Enter.