I have created live usb using unetbootin and created persistent storage of 4000MB using Persistent Creator tool provided in the distro.
Neptune is a GNU/Linux distribution for desktops. It is based on Debian's Stable branch, except for a newer kernel, some drivers and newer versions of popular applications, such as LibreOffice. It also ships with the latest version of the KDE desktop. The distribution's main goals are to provide a good-looking general-purpose desktop with pre-configured multimedia playback and to offer an easy-to-use USB installer with a persistence option.
OS Type: Linux
Based on: Debian (Stable)
Origin: Germany
Architecture: x86_64
Desktop: Enlightenment, KDE Plasma
Category: Desktop, Live Medium
Status: Active
Popularity: 78 (149 hits per day)
Neptunes focuses on providing an elegant out of the box experience for the users. Therefor we ship a nice and simple overall look and feel aswell as a whole bunch of multimedia tools, like codecs, flash player, audio and video player.
Multimedia being one of the core features of Neptune we also ship the greatest free and open source tools for audio and video editing.
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https://www.youtube.com/watch?v=_xTNKwBB14k