A lot of software must be run from the context of a VM's local drive. For instance, Microsoft Office, SharePoint 2010 (including many of the pre-requisites), SharePoint Designer, SharePoint Workspace all require a local extraction just to name a few . That often means copying very large EXEs to the VM that subsequently extract to very large folders on the virtualized C: drive of the VM. After the install is complete, these large folders can be cleaned up to recoup the space but the entire process is time consuming and avoidable.
An alternative is to extract these EXEs on the physical drive of the parent operating system using the command syntax:
Where xxx is the name of the executable and NewFolder is the destination for the extracted files (no spaces allowed).
Then download and install an ISO creating software like ISO Recorder v3.1 (http://isorecorder.alexfeinman.com/isorecorder.htm). Right-click the NewFolder containing the extracted content and create an ISO file. Using this technique, an entire media directory of ISOs can be created and used for each new VM.
To use the extracted EXE's ISO in the VM, just "insert" the ISO into the virtual DVD drive. Choose Media > DVD Drive > Insert Disk in Hyper-V VMs. The VM then treats the contents of the ISO as local files.