VCD Properties Question-Don't Understand

[molley]

This is something I just can't get my head around.
I have several VCD's made from DVD's ( not by me).
When you look at the disc ( 80min/800mb)it shows a fraction of the disc as burned , In My Computer the properties shows as "2.15 Used Space/0 Free Space/2.15mb Capacity" but when you open the disc there are 5 folders " MPEGAV 635 MB/Cdi 1.55MB/Ext 79.6KB/Segment 0/VCD 68.0KB" What I dont understand is why the Used Space doesn't equal the sum of the parts .?
Can anyone explain this to me b4 my head bursts.
tia
Stuart

[sokhapkin]

The VCD consists of 2 parts - the first track is a small ISO image abt 2M in size with a control information to play VCD, the rest is one or more mode 2 tracks burned with mpeg file(s). Looks like Windows shows the information about the ISO track only.