Procedure:

1) Start new installation of DEV300m77 (or some former versions).
2) When Installation Wizard is at Setup Type page, select Custom option and
press Next button.
3) At Custom Setup page press Space button.
4) At Disk Space Requirements Window you have text: "The highlighted volumes do
not have enough disk space available for the currently selected features. You..."

So new user may think that (s)he have not enough disk space at all. But
situation is so that there is no disk/volume selected/highlighted and no easy
way do so. The space is of course too small as it is nil.  

This feature is quite old one so maybe it is no way harmful to anybody and the
purpose of it is only keep the product imago at certain level?

Regards
Risto