Apart from the standard VESA resolutions, the Oracle VM VirtualBox VESA BIOS enables you to add up to 16 custom video modes which will be reported to the guest operating system. When using Windows guests with the Oracle VM VirtualBox Guest Additions, a custom graphics driver will be used instead of the fallback VESA solution so this information does not apply.
Additional video modes can be configured for each VM using the extra data facility. The extra data key is called CustomVideoMode with xx being a number from 1 to 16. Please note that modes will be read from 1 until either the following number is not defined or 16 is reached. The following example adds a video mode that corresponds to the native display resolution of many notebook computers:
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The VESA mode IDs for custom video modes start at 0x160. In order to use the above defined custom video mode, the following command line has to be supplied to Linux:
For guest operating systems with Oracle VM VirtualBox Guest Additions, a custom video mode can be set using the video mode hint feature.
2.7.2. Configuring the Maximum Resolution of Guests When Using the Graphical Frontend
When guest systems with the Guest Additions installed are started using the graphical frontend, the normal Oracle VM VirtualBox application, they will not be allowed to use screen resolutions greater than the host's screen size unless the user manually resizes them by dragging the window, switching to full screen or seamless mode or sending a video mode hint using VBoxManage. This behavior is what most users will want, but if you have different needs, you can change it by issuing one of the following commands from the command line:
Folx pro 5 3 – download manager job. Remove all limits on guest resolutions.
Manually specify a maximum resolution.
Restore the default settings to all guest VMs.
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2.22. Starting Virtual Machines During System Boot
You can start VMs automatically during system boot on Linux, Oracle Solaris, and Mac OS X platforms for all users.
Rsync Gui
2.22.1. Linux: Starting the Autostart Service With init
On Linux, the autostart service is activated by setting two variables in /etc/default/virtualbox. The first one is VBOXAUTOSTART_DB which contains an absolute path to the autostart database directory. The directory should have write access for every user who should be able to start virtual machines automatically. Furthermore the directory should have the sticky bit set. The second variable is VBOXAUTOSTART_CONFIG which points the service to the autostart configuration file which is used during boot to determine whether to allow individual users to start a VM automatically and configure startup delays. The configuration file can be placed in /etc/vbox and contains several options. One is default_policy which controls whether the autostart service allows or denies to start a VM for users which are not in the exception list. The exception list starts with exception_list and contains a comma separated list with usernames. Furthermore a separate startup delay can be configured for every user to avoid overloading the host. A sample configuration is given below:
Any user who wants to enable autostart for individual machines must set the path to the autostart database directory with the following command:
Macos Background Service
2.22.2. Oracle Solaris: Starting the Autostart Service With SMF
On Oracle Solaris hosts, the Oracle VM VirtualBox autostart daemon is integrated into the SMF framework. To enable it you must point the service to an existing configuration file which has the same format as on Linux, see Section 2.22.1, 'Linux: Starting the Autostart Service With init'. For example:
When everything is configured correctly you can start the Oracle VM VirtualBox autostart service with the following command:
For more information about SMF, see the Oracle Solaris documentation.
2.22.3. Mac OS X: Starting the Autostart Service With launchd
2do 2 6 3 12. On Mac OS X, launchd is used to start the Oracle VM VirtualBox autostart service. An example configuration file can be found in /Applications/VirtualBox.app/Contents/MacOS/org.virtualbox.vboxautostart.plist. To enable the service copy the file to /Library/LaunchDaemons and change the Disabled key from true to false. Furthermore replace the second parameter to an existing configuration file which has the same format as on Linux, see Section 2.22.1, 'Linux: Starting the Autostart Service With init'.
To manually start the service use the following command:
For additional information on how launchd services can be configured see:
http://developer.apple.com/mac/library/documentation/MacOSX/Conceptual/BPSystemStartup/BPSystemStartup.html.
2.22.4. Windows: Starting the Autostart Service With a Windows service
On Windows, autostarting is implemented as a Windows service. The service is installed for every user with their own credentials. Before installing any autostart services on a system you first have to define the VBOXAUTOSTART_CONFIG environment variable in the system variables with the path to the autostart configuration file. The configuration file has the same format as on Linux, see Section 2.22.1, 'Linux: Starting the Autostart Service With init', except the user name can be specified using the following formats: 'user', 'domainuser', '.user' and 'user@domain'.
To enable autostarting for a particular user, a member of the administrators group must run the following command:
Launchd Mac
The password file should contain the password followed by a line break. The rest of the file is ignored. The user will be asked for a password if the password file is not specified.
Mac Launch Agents
To disable autostarting for particular user, a member of the administrators group must run the following command: Djay pro 1 0 2 download free.
If a user has changed their password then a member of the administrators group must either reinstall the service or change the service credentials using Windows Service Manager. Due to Windows security policies, the autostart service cannot be installed for users with empty passwords.
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