Nortel Meridian 1 Manual page 224

23 Remove each MSI or EMSI card. For MSI cards, set position 4 on switch
SW3 to ON. For EMSI cards, set position 4 on switch SW2 to ON.
24 Reinstall each MSI or EMSI card and set the ENB/DIS switch to ENB.
25 If you are installing an MDU and the system is not configured for a hard
disk drive, change the configuration record:
LD 17
IOTB
ADAN
****
26 Perform a data dump:
LD 43
EDD
When "DATABASE BACKUP COMPLETE" or "DATADUMP
COMPLETE" displays on the terminal, enter
****
If the data dump is not successful, do not continue; contact your
technical support organization. A data dump problem must be
corrected before proceeding.
27 To continue ugrading the RT to release 21, proceed with step 28. If you
are upgrading the RT to an option 61C X11 release 22, remove the
database disk and use the procedures in Upgrade system installation to
X11 release 22 (553-3001-258) to upgrade the system hardware and
convert the software to release 22.
28 Verify the system by using the test procedures described in Meridian 1
system installation procedures (553-3001-210) and X11 input/output
guide (553-3001-400). Clear any faults discovered during testing.
29 Follow the "Postconversion procedure" in Software conversion
procedures (553-2001-320).
Upgrade system installation Upgrading to Meridian 1 system options
to load the program
enter YES to change I/O devices
enter CHG HDK 0 to add a hard disk unit
to exit the program
to load the program
to begin the data dump
to exit the program
CAUTION
SL-1 RT system upgrades 5-39