Toshiba Tecra M5 BIOS support for Bitlocker in TPM mode?

I have a Tecra M5 (PTM51E) running Vista Ultimate. I would like t
configure Bitlocker using the TPM which is on board. I am aware tha
Bitlocker can be used without a TPM, but this requires the user to hav
an external token e.g. on a USB drive which they have to insert at boo
time. I would rather use the TPM mode so there will be no need for this

I have flashed the BIOS to v3.60 which is the latest. Before I was abl
to flash the BIOS from within Vista (which is the only option provide
on the Toshiba European support site) I found I had to load the driver
for the "Value Added Package", without this the BIOS updater simply say
"Computer not supported". Another way to do it is get the BIOS for th
PTM51U from the US site which allows you to write the BIOS updater ont
a bootable floppy.

I used the "Bitlocker Drive Preparation Tool" which is available as a
"Ultimate extra" from Microsoft to set up the partitions as required b
Bitlocker, i.e. my 40 GB hard drive is divided into a main partition t
be encrypted C of 35.7 GB and a separate partition S of 1.5 GB.

I have the "Trusted Platform Module" driver v3.00.1135.00 which is th
latest. Having enabled the TPM in the BIOS (hold ESC when powering o
and then hit F1, second page) I can then go into the Infineon Securit
Platform Initialisation Wizard and set the "Platform Owner" and othe
passwords etc.

The TPM initialisation wizard automatically opens the Bitlocker confi
applet when it finishes (or you can get to it any later time via th
control panel)

The message I get from the Bitlocker applet is:

"Your system is not configured to use BitLocker Drive Encryption. Th
BIOS did not correctly communicate with the Master Boot Record (MBR)
Contact the computer manufacturer for BIOS upgrade instructions".

Does anybody have this working on an M5 (i.e. Bitlocker with TPM)? Ho
did you do it

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matthewj9