  We present results of extensive model calculations of disk galaxy evolution
within an hierarchical inside-out formation scenario. We first compare
properties of the dark halos identified in a cosmological N-body simulation
with predictions of a seminumerical method based on an extended collapse model
and find a good agreement. We also study the properties of the halos in
dependence on their environment. We then describe detailed modelling of the
formation and evolution of disks within the growing isolated cold dark matter
halos and predictions for the main properties, correlations and evolutionary
features of normal disk galaxies. The possible shortcomings of the scenario are
discussed.
