Patent ID: 7293150

Claim:
A destination storage media having an image file stored thereon, wherein the image file is created from source data stored on a source storage media, the image file including a plurality of image streams, comprising: a control stream including data identifying the image file; a data stream containing the source data; and a cluster map stream containing a plurality of records, each record identifying: a first location corresponding to allocation of a portion of the source data on the source media; a second location corresponding to a location of the portion of the source data in the data stream; wherein the plurality of image streams further comprising: a bitmask stream containing data identifying allocated and unallocated clusters of the source storage media; and wherein the bitmask stream comprises a plurality of bits, each bit corresponding to a cluster on the source storage media volume and each bit having a value that identifies whether the cluster on the source storage media volume is allocated or unallocated.