Qubes-Whonix ™ Overview
(Redirected from Qubes OS)
In this configuration Whonix ™ runs on top of Qubes inside virtual machines (VMs), just like any other OS on the same platform (Fedora, Debian, Arch Linux and so on).
The Qubes bare-metal hypervisor is based on Xen [archive] and Fedora [archive]. Via hardware support like VT-x [archive], VT-d [archive] and TXT [archive],  Qubes has implemented a strict security-by-isolation architecture. Hardware controllers and multiple user domains (qubes) are isolated using separate VMs that are explicitly assigned different levels of trust, yet the desktop experience is user-friendly and well-integrated.
Whonix ™ is based on Debian [archive] and Tor [archive]. The design provides a two-VM, split security architecture: an isolated Whonix-Gateway ™ (ProxyVM;
sys-whonix) for complete routing of traffic over Tor; and Whonix-Workstation ™ (App Qube;
anon-whonix) for all desktop applications, which serves as a tailored OS environment for Tor-based privacy/anonymity.
To use Qubes-Whonix ™, Qubes must first be installed as a hypervisor on the physical host computer, followed by installation of the two separate Whonix ™ TemplateVMs --
whonix-ws-16 -- on top of Qubes. From this point, the Whonix ™ TemplateVMs can be used for customization and creation of multiple Whonix-Gateway ™ ProxyVMs and Whonix-Workstation ™ AppVMs, enabling enhanced compartmentalization of user activities for better privacy. 
For a more in-depth consideration of Qubes-Whonix ™ advantages, see: Why use Qubes over other Virtualizers?
Figure: Qubes OS Design 
For major TemplateVM and AppVM operations, refer to the following guides:
For improved security and anonymity after installing Qubes-Whonix ™, refer to the following guides:
Before seeking personal support, please first search for the issue and a possible, documented solution. In many cases the issue can be solved by inspecting the phabricator issues tracker, reading Whonix ™ guides/documentation, conducting web searches, and examining past support requests.
If a search yields no results, support requests should be directed to the most appropriate forum:
- Qubes-Whonix ™-specific: Whonix ™ Qubes Forum [archive]
- Whonix ™, Debian and Tor: Whonix ™ Support
- https://software.intel.com/content/www/us/en/develop/articles/intel-trusted-execution-technology-intel-txt-enabling-guide.html [archive]
- The only limitation on the number of possible VMs is available disk space.
- https://www.qubes-os.org/intro/ [archive]
- The former discourse forum [archive] was discontinued on 1 July, 2021.