[OSGeo-Discuss] Live DVD advice

[Brent Wood]

Hi,
I'm looking to build a LiveDVD/USB key with QGIS, OSM base layer and web services for New Zealand.
Our road & topo data is very up to date in OSM, and we have numerous government (central, regional & local) agencies and others providing data via OGC services, so I'm hoping the system will have embedded OSM, and pre-loaded OGC servers to connect to, as well as some QGIS plugins specific to New Zealand.
The disk/key is intended for schools & demonstrations showing FOSS, FOSS GIS, Open Data and Open Standards, focused on NZ data.

Some years ago I built a laptop system demo'ed at several local schools which worked OK, with mapserver serving OSM via WMS direct from Postgis. NZ is small enough that the data could be rendered dynamically from the vector data in a reasonably interactive system. 

I can't reasonably use Postgis on a read only filesystem, and all the later guides assume that tiles will be used. Does anyone have any advice as to how I might best do this?
Thanks,
Brent Wood
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