The contents of the element's path attribute are not at all defined by colinux. Colinux, which is entirely ignorant of the meaning of this attribute, instead depends on the host operating system to understand the value and to provide the correct resource. For colinux under Windows, that means the value must be a valid Windows device path. I won't provide an exhaustive list of these device paths, but will provide enough for most users to accomplish what they want: Contrast between windows and unix: If you want further information on partitions and linux numbering, see Examples: