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OSFMount is a disk image mounting utility developed by PassMark Software for the Windows operating system, currently available in version 3.3.1000.0, which is the single version listed in this catalog entry. The software serves the purpose of mounting local disk image files—bit-for-bit copies of an entire disk or an individual disk partition—directly within Windows. Once mounted, these image files can be presented to the operating system either as a physical disk or as a logical drive letter, allowing users to interact with the contents of the image as though it were a locally attached storage device. This functionality places OSFMount in the disk utilities and virtual drive category, a class of tools commonly used in data recovery, digital forensics, backup verification, software testing, and general file access workflows where examining or extracting data from disk images is required without writing changes to physical media. By assigning a logical drive letter to an image, OSFMount enables the image's file system to be browsed through standard Windows tools such as File Explorer, making files and folders contained in the image accessible to other applications. Alternatively, mounting an image as a physical disk allows lower-level interaction, which can be relevant for scenarios where software expects a disk device rather than a simple volume. Because the tool works with bit-for-bit copies, it is suited to situations where an exact replica of a disk or partition has been created and needs to be examined, analyzed, or used without modifying the original source. The catalog records one version of OSFMount, so version 3.3.1000.0 represents the current and only listed release. Users evaluating mounting solutions for Windows can consider OSFMount when their work involves local disk image files that must be accessed as either physical disks or drive letters within the operating system environment.
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