Running LiveCD from HD

To: For users of Fedora Core releases <fedora-list@xxxxxxxxxx>
Subject: Running LiveCD from HD
From: Amy M <amymom@xxxxxxxxxxxxxx>
Date: Mon, 24 Jan 2005 08:12:10 -1000
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I am interested in testing out a couple of LiveCDs. Is there any way to boot into its HD iso image without first burning onto a CD? Thanx.