Audio Quality: Use the slider to set the quality of the audio recording. Increasing this value improves the audio quality at the cost of an increased file size. Screens: For a multiple monitor display, you can select which screens to record video from. As you adjust the video and audio recording settings, the approximate output file size for a five minute video is shown.
In a real computer, so-called storage controllers connect physical disk drives to the rest of the computer. If you have used the Create VM wizard to create a machine, you will normally see something like the following:.
Depending on the guest OS type that you selected when you created the VM, a new VM includes the following storage devices:. IDE controller. SATA controller. This is a modern type of storage controller for higher hard disk data throughput, to which the virtual hard disks are attached.
Initially you will normally have one such virtual disk, but as shown in the previous screenshot, you can have more than one. Each is represented by a disk image file, such as a VDI file in this example.
This might also apply if you selected an older OS type when you created the VM. Oracle VM VirtualBox also provides a floppy controller. You cannot add devices other than floppy drives to this controller. You can modify these media attachments freely. For example, if you wish to copy some files from another virtual disk that you created, you can connect that disk as a second hard disk, as in the above screenshot. You can then either select Optical Drive or Hard Disk.
If you clicked on a floppy controller, you can add a floppy drive instead. Alternatively, right-click on the storage controller and select a menu item there. A dialog is displayed, enabling you to select an existing disk image file or to create a new disk image file. Most commonly, you will select this option when installing an OS from an ISO file that you have obtained from the Internet.
For example, most Linux distributions are available in this way. Depending on the type of disk image, you can set the following Attributes for the disk image in the right part of the Storage settings page:.
The device slot of the controller that the virtual disk is connected to. IDE controllers have four slots: primary device 0, primary device 1, secondary device 0, and secondary device 1.
Solid-state Drive presents a virtual disk to the guest as a solid-state device. Hot-pluggable presents a virtual disk to the guest as a hot-pluggable device.
This means that the virtual optical disk is not removed from when the guest system ejects it. To remove an attachment , either select it and click on the Remove icon at the bottom, or right-click on it and select the menu item. Since the Settings dialog is not available at that time, you can also access these settings from the Devices menu of your virtual machine window.
The Audio section in a virtual machine's Settings window determines whether the VM will detect a connected sound card, and if the audio output should be played on the host system.
To enable audio for a guest, select the Enable Audio check box. The following settings are available:. On newer Linux distributions, the PulseAudio subsystem is preferred. The Network section in a virtual machine's Settings window enables you to configure how Oracle VM VirtualBox presents virtual network cards to your VM, and how they operate. This way the guest can connect to the outside world using the host's networking and the outside world can connect to services on the guest which you choose to make visible outside of the virtual machine.
It supports many virtual network cards per virtual machine. The first four virtual network cards can be configured in detail in the VirtualBox Manager window. Additional network cards can be configured using the VBoxManage command. Many networking options are available. See Chapter 6, Virtual Networking for more information. Serial ports were commonly used with modems, and some computer mice used to be connected to serial ports before USB became commonplace.
While serial ports are no longer as common as they used to be, there are still some important uses left for them. For example, serial ports can be used to set up a primitive network over a null-modem cable, in case Ethernet is not available. Also, serial ports are indispensable for system programmers needing to do kernel debugging, since kernel debugging software usually interacts with developers over a serial port. With virtual serial ports, system programmers can do kernel debugging on a virtual machine instead of needing a real computer to connect to.
Both receiving and transmitting data is supported. How this virtual serial port is then connected to the host is configurable, and the details depend on your host OS.
You can use either the Settings tabs or the VBoxManage command to set up virtual serial ports. For the latter, see Section 8. You can configure up to four virtual serial ports per virtual machine. For each device, you must set the following:. Port Number: This determines the serial port that the virtual machine should see. For best results, use the traditional values as follows:. You can also configure a user-defined serial port. Port Mode: What the virtual port is connected to. For each virtual serial port, you have the following options:.
Disconnected: The guest will see the device, but it will behave as if no cable had been connected to it. Host Device: Connects the virtual serial port to a physical serial port on your host. On a Windows host, this will be a name like COM1. Oracle VM VirtualBox will then simply redirect all data received from and sent to the virtual serial port to the physical device. This depends on your host OS, as follows:. On a Windows host, data will be sent and received through a named pipe.
The socket filename must be chosen such that the user running Oracle VM VirtualBox has sufficient privileges to create and write to it. On Linux there are various tools which can connect to a local domain socket or create one in server mode. The most flexible tool is socat and is available as part of many distributions. In this case, you can configure whether Oracle VM VirtualBox should create the named pipe, or the local domain socket non-Windows hosts, itself or whether Oracle VM VirtualBox should assume that the pipe or socket exists already.
With the VBoxManage command-line options, this is referred to as server mode or client mode, respectively. For a direct connection between two virtual machines, corresponding to a null-modem cable, simply configure one VM to create a pipe or socket and another to attach to it.
Raw File: Send the virtual serial port output to a file. This option is very useful for capturing diagnostic output from a guest. Any file may be used for this purpose, as long as the user running Oracle VM VirtualBox has sufficient privileges to create and write to the file.
This option enables a remote machine to directly connect to the guest's serial port using TCP. This is typically 23 or Note that on UNIX-like systems you will have to use a port a number greater than for regular users.
Up to four serial ports can be configured per virtual machine, but you can pick any port numbers out of the above. However, serial ports cannot reliably share interrupts. As soon as the guest system starts using a USB device, it will appear as unavailable on the host. Be careful with USB devices that are currently in use on the host. For example, if you allow your guest to connect to your USB hard disk that is currently mounted on the host, when the guest is activated, it will be disconnected from the host without a proper shutdown.
This may cause data loss. Oracle Solaris hosts have a few known limitations regarding USB support. See Section 7. For this, you can create filters by specifying certain properties of the USB device. USB devices with a matching filter will be automatically passed to the guest once they are attached to the host. USB devices without a matching filter can be passed manually to the guest, for example by using the Devices , USB menu. You can give the filter a name, for later reference, and specify the filter criteria.
The more criteria you specify, the more precisely devices will be selected. For instance, if you specify only a vendor ID of d, all devices produced by Logitech will be available to the guest. If you fill in all fields, on the other hand, the filter will only apply to a particular device model from a particular vendor, and not even to other devices of the same type with a different revision and serial number.
Vendor and Product ID. Microsoft has pulled all available copies of the Windows 7 evaluation trial now that Windows 10 has been released. The Windows 10 Enterprise edition trial, and information on many other editions of Windows 10 available for download, can be found here. If you would like to download the full edition of Windows 7, which can be used for up to 90 days without being activated, you can download the Windows 7 ISO directly from Microsoft by clicking here but note a product key is required to download.
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