An hdd file extension is related to the HelloDOC app for doctors. An hdd file contains medical software data.
There is one other file type using
the HDD file extension!
.hdd - Parallels Desktop or Workstation virtual hard disk
HDD file extension - HelloDOC medical software data
What is hdd file? How to open hdd files?
File type specification:
The hdd file extension is associated with the HelloDOC French application for doctors and other employees in health care.
The hdd file contains various data used for internal purposes of the HelloDOC software.
This hdd file type entry was marked as obsolete and no longer supported file format.
This type of file is no longer actively used and is most likely obsolete. This is typically the case for system files in old operating systems, file types from long discontinued software, or previous versions of certain file types (like documents, projects etc.) that were replaced in higher versions of their original programs.