Nortel Meridian 1 Manual page 214

Converting a database from release 17 to release 21
1 Remove the front covers from the RT cabinet.
2 Log into the system.
3 Load the Equipment Data Dump Program (LD 43). At the prompt, enter
LD 43
Always enter LD 43 from the source (current) media. Do not exit LD 43.
When "EDD000" appears on the terminal, proceed to the next step.
Note: Your system will have either a QPC584 MSI card or an NT9D34
EMSI card.
4 Set the ENB/DIS switch on the MSI or EMSI cards in CPU 0 and CPU 1
to DIS.
5 Disconnect cables to the faceplates of both MSI or EMSI cards and
remove the cards.
6 If an NT8D69 MDU is installed in the RT system, remove it by gently
pulling the unit forward two or three inches. Wait at least 10 seconds, and
then remove it from the card slot.
Wait at least 10 seconds before you remove the MDU from the card
slot to allow the hard disk to stop spinning.
7 Install the QMM42 cartridges for release 19 software on both new MSI
or EMSI cards.
Note: If the new cards are QPC584 MSI cards, they must be vintage L
or later.
8 Set the ENB/DIS switch on both new MSI or EMSI cards to DIS.
9 On both MSI or EMSI cards, set positions 1, 5, and 7 on switch SW3 to
ON.
Upgrade system installation Upgrading to Meridian 1 system options
to load the program
CAUTION
SL-1 RT system upgrades 5-29