I am trying to find a replacement hard disk for a Panasonic Toughbook
CF-T1. The original Toshiba MK4020GLS disk was damaged irrepairably
when the laptop's owner knocked it on the floor while the disk was
spinning. With little experience of notebook hardware I am finding out
that replacing a 2.5" disk is not nearly as straightforward as
replacing a 3.5" one in a desktop.

I tried a Hitachi 80GN 40GB disk as it seemed identical in spec to the
MK4020GLS (and available locally), but the laptop wouldn't even POST.
Replacing the defective disk or removing the disks completely would
allow the system to POST again. It was only then (sigh) that I decided
to do a little research. Here are my findings:

The Panasonic Toughbook CF-T1 provides +3.3V to power the logic on pin
41 of the IDE connection. This seems to be quite a rarity (most
provide +5.5V) and goes some way to explain the long battery life of
this model. The Toshiba MK4020GLS is one of a rare breed that runs its
logic on 3.3V and I have not been able to find a replacement disk,
Toshiba or otherwise, that has this specification. Most disks are sold
with 5V logic.

My question is therefore this: Does anyone know where one can get hold
of a Toshiba MK4020GLS or compatible disk (I'm based in the UK) or
know of any way to get a 5V logic disk to from a 3.3V supply.

I have trawled through usenet and the web, and have yet to come up
with anything.

TIA

Steve