1. A method comprising: writing a file to a storage device having a file system that includes a file allocation table (FAT) by: allocating a plurality of clusters of the file system to store the file, wherein at least a portion of the allocated plurality of clusters is contiguous, and wherein the FAT comprises a plurality of cluster addresses corresponding to the allocated plurality of clusters; storing a signature value in a cluster address corresponding to a first cluster of the contiguous clusters, the signature value indicating the presence of the contiguous clusters; and storing, in each of a set of consecutive cluster addresses succeeding the cluster address corresponding to the first cluster of the contiguous clusters, a value that partially represents the number of the contiguous clusters, wherein the number of contiguous clusters is determinable by combining the values stored in each of the set of consecutive cluster addresses.