The following sections detail new features and enhancements in ScreenOS 5.0.0 releases. For a complete list and descriptions of new features and enhancements in ScreenOS 5.0.0, refer to the Juniper Networks NetScreen ScreenOS Migration Guide.
Re: 2 very basic questions ? [ from a new juniper enthusiast ] There are migration instructions posted in the Junos documentation. You can purchase a migration kit for you model that will have a flash to swap out for the install of the OS.
NOTE: One important aspect of converting an SSG 300m-series or SSG 500m-series device into a J-series services router that this document does not address is migrating the device configuration from ScreenOS format to JUNOS format. For information about migrating and loading the configuration file, refer to the JUNOS Software Migration Guide at http://www.juniper.net/techpubs/software/junos-es.
After you power on the device, JUNOS software is booted. For information about how to migrate your original ScreenOS configuration to a JUNOS software configuration and complete the migration process, see the JUNOS Software Migration Guide at http://www.juniper.net/techpubs.