The following is provided as additional information for. Virtual. Box works . In addition, most virtual. Where all these files are. Virtual. Box created the machine. The location of this home directory depends on. On Windows, this is the location returned by the.
SHGet. Folder. Path function of the. Windows system library Shell. Only. on very old Windows versions which don't have this function. USERPROFILE% is checked, if it. HOMEDRIVE%%HOMEPATH% is made.
Starting with version 4.0, by default, each virtual machine has one directory on your host computer where all the files of that machine are stored -- the XML.
Using that convention, the. HOME/Virtual. Box VMs. As an example, when you create a virtual machine called . Once. you start working with the VM, additional files will show up: you will. Logs, and once you have taken. Snapshots subfolder.
For each VM, you. VM. settings. You can change the default machine folder by selecting.
Alternatively. use VBox. Manage setproperty. Section. The machine settings files had an. So, for example, on Linux, this was. HOME/. Virtual. Box/Machines. The default hard disks folder was called . Download Do Cd Tom Jobim Airport there.
Both locations could be changed by the user in the global. In addition, the virtual media of all machines were. Virtual. Box. settings file. HOME/. Virtual. Box/Virtual. Box. xml). To move a machine to another host, it was therefore not. XML settings file and the disk images (which.
XML had to be meticulously copied as well. Storing virtual disk images, which can grow very large. Virtual. Box. directory (at least on Linux and Solaris hosts) made many users. Whereas new VMs created with Virtual. Box 4. 0 or later will conform.
VMs are. not converted to the new layout. Otherwise machine. Virtual. Box. 1. 0. On Linux and Solaris as of Virtual.
Box 4. 3, this. is in the hidden directory $HOME/. Virtual. Box, although $HOME/. Virtual. Box will be used if it exists for compatibility with earlier versions; on Windows (and on Linux and Solaris with Virtual. Box 4. 2 and earlier) this is in $HOME/.
Virtual. Box; on a Mac it resides in. HOME/Library/Virtual. Box. Virtual. Box creates this configuration directory automatically if. Optionally, you can supply an alternate configuration.
VBOX. This includes global. XML settings files.
For. compatibility, this media registry still exists if you upgrade. Virtual. Box and there are media from machines which were created with a. If you have no such machines, then there will be no. Virtual. Box 4. 0, each machine XML file has. Also before Virtual.
Box 4. 0, the default . When a new settings file. These files may not be readable if you downgrade to an earlier. Virtual. Box. However, when Virtual.
Box encounters a settings. It will. only silently upgrade the settings format if the current settings cannot. Virtual. Box. If you need to go back. Virtual. Box, then you will need to manually.
We intentionally do not document the specifications of the. Virtual. Box XML files, as we must reserve the right to modify them in the. We therefore strongly suggest that you do not edit these files. Virtual. Box provides complete access to its configuration data.
VBox. Manage command line. Chapter. When the. Virtual. Box graphical user interface (GUI) is opened and a VM is started.
VBox. SVC, the Virtual. Box. service process which always runs in the background.
This process is. started automatically by the first Virtual. Box client process (the.
GUI, VBox. Manage. VBox. Headless, the web service or. The. service is responsible for bookkeeping, maintaining the state of all. VMs, and for providing communication between Virtual. Box components. Virtual. Box employs its own. The GUI process, Virtual.
Box. a client application based on the cross- platform Qt library. When. started without the - -startvm. Virtual. Box manager, displaying. VMs and their settings. It then communicates settings and state. VBox. SVC and also.
VBox. Manage. If the Virtual. Box client. application is started with the. VMM library which includes the actual hypervisor and then runs a. Any Virtual. Box front- end (client) will communicate with the service. For example. either the VM selector or the VM window or VBox.
Manage can be used to pause. VM, and other components will always reflect the changed. The Virtual. Box GUI application is only one of several available. The complete list shipped with Virtual.
Box. is: Virtual. Box, the Qt front end. VMs; VBox. Manage, a less. Chapter. This is described in detail in the Virtual. Box Software. Development Kit (SDK) reference; please see Chapter. This is also described in the SDK reference.
Internally, Virtual. Box consists of many more or less separate. You may encounter these when analyzing Virtual. Box internal. error messages or log files.
These include: IPRT, a portable runtime library which abstracts file access. Whenever Virtual. Box accesses host. VMM (Virtual Machine Monitor), the heart of the. EM (Execution Manager), controls execution of guest code.
REM (Recompiled Execution Monitor), provides software emulation. CPU instructions. TRPM (Trap Manager), intercepts and processes guest traps and. HM (Hardware Acceleration Manager), provides support for VT- x. AMD- V. GIM (Guest Interface Manager), provides support for various. PDM (Pluggable Device Manager), an abstract interface between.
VMM and emulated devices which separates device implementations. VMM internals and makes it easy to add new emulated devices. Most of these are standard. PC compatible machines and widely supported by. For network and storage devices in. These devices are managed by. PDM. Guest Additions for various guest operating systems.
This is. code that is installed from within a virtual machine; see Chapter. All the. client processes listed above use only this API and never access the. As a result, third- party applications.
Virtual. Box Main API can rely on the fact that it is. Virtual. Box are fully.
It is this API that is described in the Virtual. Box SDK. mentioned above (again, see Chapter. Whenever the. guest attempts to do something that could be harmful to your computer and. Virtual. Box steps in and takes action. In particular, for lots of. Virtual. Box simulates a.
For example, when the guest attempts to access a hard. Virtual. Box redirects these requests to whatever you have configured. Unfortunately, the x. Detecting situations in which Virtual. Box needs to take.
There are two ways in which to achieve this: Since 2. Intel and AMD processors have had support for. This means that these processors can. Virtual. Box to intercept potentially dangerous operations that a.
These hardware features differ between Intel and AMD. Intel named its technology VT- x; AMD calls theirs AMD- V. The Intel and AMD support for. Note. On many systems, the hardware virtualization features.
BIOS before Virtual. Box can use. them.
As opposed to other virtualization software, for many usage. Virtual. Box does not require hardware. Through sophisticated. Virtual. Box virtualizes many guest operating systems. This means. that you can run virtual machines even on older processors which do. Even though Virtual. Box does not always require hardware.
Certain rare guest operating systems like OS/2 make use of. For virtual machines that are configured to.
Virtual. Box's 6. SMP, added with version 3. While several. hypervisors can normally be installed in parallel. Virtual. Box cannot track what. VT- x, this can crash the entire host. Also, within. Virtual.
Box, you can mix software and hardware virtualization when. VMs. In certain cases a small performance penalty will. VT- x and software virtualization VMs.
We. recommend not mixing virtualization modes if maximum performance and low. This does not apply to. AMD- V. 1. 0. 4. These interfaces require the guest operating system. Virtual. Box hypervisor. Most modern mainstream guest operating systems, including.
Windows and Linux, ship with support for one or more paravirtualization. Hence, there is typically no need to install additional software. For example, the. Hyper- V paravirtualization provider can be.
VMs to run on any host platform (supported by Virtual. Box) and. not just Windows. Virtual. Box provides the following interfaces: Minimal: Announces the.
Additionally, reports the.