Making a native partition an extension

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http://forums.opensuse.org – Linux newbie here, had a kernel panic and didn't know how to fix it so I reformatted. I didn't delete my old extension and recently mounted it so I could retrieve the data. I was wondering if there was any way I could make it the extension to my current native without deleting any of the data? Or if attaching it as an extension was at all possible at this point. Any help would be much appreciated. (Distributions)