Although disk cloning programs are not primarily backup programs, they are sometimes used as such. A key feature of a backup program is to permit the retrieval of individual files without needing to restore the entire backup. Disk cloning programs either provide a Windows Explorer-like program to browse picture files & extract individual files from them, or permit an picture file to be mounted as a read-only filesystem within Windows Explorer.
Ghost is marketed as a backup program. It comes with an ISO file that needs to be written to a CD. This provides a recovery environment to perform a full process recovery. There's also provision to mount a drive & select backed-up files from that drive & recover them to the primary hard disk.
Ghost can copy the contents of five hard drive to another & can convert a hard drive's contents to a virtual disk format such as VMware VMDK file.
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