The following is additional to my former posts about the subject:

I don't know if this is significant but looking at the sizes of the partitions
-in Mkfs c.q. the Installer  604976Kb but in
-FWB 302488Kb
and to give another example:
the size of the driver in FWB 512Kb and in Mkfs c.q. the Installer 1024Kb.

It seems also that the partitions itself appear (sometimes) double in Mkfs
(=BTW the latest vs)

I thought i better share this with you

T@W