Many older, poorly-written educational programs expect to access files from a CD-ROM. In some cases, the location where the program expects to find files can be changed by digging around and altering INI files or registry values. In other cases, the path to the files, including the drive letter D:, is hard coded into the application.

Support for multiple drive paths within the virtual application file system would allow these older applications to be virtualized without having a CD-ROM or drive mapping to the required files present on the end-user's machine. An ideal solution for this sort of situation would be to allow the inclusion of a disc image in the form of an ISO file to be included in the virtualized application and mapped to a specific drive letter within the virtualized application.

The ability to specify drive letters in the virtual application's file system would allow expected files that are accessed via hard-coded or difficult-to-change paths to be included within the application. The inclusion of an ISO file within a virtualized application, which would be accessed by the application as a virtualized CD-ROM drive, would provide an easy, modular way to include the required files within an application. Many schools have lots of old CD-ROM based educational programs that could benefit from application virtualization.

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