It's worth seeing if you can take the disk out and add it in as an extra drive on another computer running Win2000 onwards to see if it can be accessed?.
Here is my tip below.
BCM 400 3.7 Disk Example Information
Drive No Partition Type Size MB Used MB Unused MB Status Pri/Log
(G

DOS FAT 15.7 0.0 15.6 None Primary
(H

WINNT NTFS 2,502.3 884.4 1,617.9 Active Primary
(I

MAINTOS NTFS 1,004.1 539.3 464.7 None Primary
(*) Extended 15,476.7 15,476.7 0.0 None Primary
(J

DATA NTFS 9,452.3 210.9 9,241.4 None Logical
(K

LOGS NTFS 2,008.1 4.7 2,003.4 None Logical
(L

NNACTIVE NTFS 2,008.1 1857.9 150.2 None Logical
(M

NNINACTIVE NTFS 2,008.1 6.1 2,001.9 None Logical
(*) Unallocated 470.7 0.0 0.0 None Primary
How do I install a replacement hard drive?
UK example!
Select BCM 3.x or BCM 4.0
BCM 3.x Hard Drive
1. Replace the old hard drive with the new hard drive.
2. Visually inspect the inside of the BCM to confirm all connections are OK. It may be a good idea to use a PC style vacuum
cleaner to remove excessive amounts of dust from the unit.
3. Replace the cover
4. Connect your PC to Serial port using a Null Modem Serial cable (available from Maplin item VD76)
5. Apply power to the BCM & allow 5 minutes for the BCM to become operational. During this time it will perform a check disk
and a reboot.
6. Open Hyper terminal session on your PC
• IN CONNECTION DESCRIPTION NAME IT BCM AND PICK AN ICON
• IN PHONE NUMBER CHECK CONNECT USING IS DIRECT TO COM 1
• IN COM 1 PROPERTIES CHECK PORT SETTINGS
• BITS PER SECOND 9600
• DATA BITS 8
• PARITY NONE
• STOP BITS 1
• FLOW CONTROL HARDWARE
7. If the BCM is ready you will then be prompted to log in.
• user name: ee_admin
• domain: (leave blank just press return)
• password: PlsChgMe! or eedge depending on HDD
8. You will then be presented with a menu, press1 to select "Platform Initialisation Menu".
9. From the "Platform Initialisation Menu" choose option 1 - "Initialise Menu"
10. From the Initialise Menu" choose option 1 - "Initialise Universal Profile" and wait for a short time for the next menu to appear
11. From the "MSC Initialisation Menu" choose option 3 – depending on HDD version this maybe "E1 MSC LOAD" for 3.01 and 3.5 and "UK MSC E1" for 3.6. Again depending on the HDD version the leds on BCM will flash in a particular way. For 3.01 and 3.5 all Leds will flash green and for 3.6 you will see the Power flash red then the Temperature followed by the Fan and other leds will be green or out.
12. During this stage the BCM will upload the necessary files and core and will do various reboots, when you have all leds showing steady green it has completed. The whole process should be completed within 30-40 minutes.
All the best
Firebird Scrambler
Meridian Programmer in the UK
Useful Nortel forum at
If it's working, then leave it alone!.