The relative to this thematic registry key is codice_26. It defines mapping of drive letters into particular hard disk partitions, similar to /etc/fstab on a Unix system. It also can be edited manually, but only at that time while that particular installed Window operation system is "inactive". So that, for example, if you currently boot from "codice_27" then you can edit the codice_26 key of Windows that is installed in a "codice_29" folder, for an instance by doing the following actions: