There are several scenarios for which you may wish to access the (cached) target drive on another computer:
You are unable to boot from the drive (due to system crash, bad drivers, virus infection, etc.).
You wish to transfer certain data on the target drive to another machine.
Before accessing the target drive in a different computer, all cache data should be synchronized from the cache drive to the target drive. To do so, Dataplex must be uninstalled or disabled. Otherwise, data on the target drive will not be accessible from a different computer. This is to protect you or an external OS from corrupting the target drive data by mistake.