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CloneZilla works by copying used blocks on the storage device (i.e. CloneZilla Server Edition (SE) additionally uses udpcast which provides multicasting support similar to the now-defunct Norton Ghost suite. Both use Partclone, Ntfsclone and Partimage to image the drive either over the network or to a locally-attached hard disk drive. Both use a preinstallation environment to load the software from a portable USB flash drive.
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There are two variants of CloneZilla: (1) CloneZilla Live (which is intended to be used for imaging a single computer) and (2) CloneZilla Server Edition (SE) (which is intended for mass deployment over a computer network).
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