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I ran the upgrade from the iso and after booting my raid 5 array no longer appears to exist. I will admit to on caveat that I was upgrading what was technically initially (months ago and before many changes to the OS) an ubuntu server install to ubuntu desktop. That fact aside is it really the default behavior of the upgrade to destroy a raid array. I am going to keep looking as I am sure I must have just missed something myself.

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closed as too localized by Eric Carvalho, Jorge Castro, Thomas W., psusi, belacq Apr 25 '13 at 17:24

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Insufficient data for meaningful answer. Try to provide more specific details. –  psusi Apr 25 '12 at 4:15
    
Is this soft-raid, or raid-controller (hardware)? Did you attempt to setup raid? Did you backup, before starting? –  david6 Apr 25 '12 at 5:46