how ? Persistent Live Opensuse thumdrive

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http://forums.opensuse.org – I want to create a persistent Live opensuse thumbdrive. 1.One way is to install opensuse to thumbdrive.But,that will not be live.Will standard yast installer make the thumdrive bootable automatically? 2.Is there a way to,say,retain the drive as a live medium,but to be able to save documents,mail,choice of wallpapers etc.,? Ubuntu variants allow it,but,I want opensuse kde. Thanks in advance. (Distributions)