Windows 7 virtual pc mac address
At the lowest networking level, network interfaces attached to a network use MAC addresses to communicate with one another. The web address you type gets translated to the IP address of the server.
Maintaining and Changing the MAC Address of a Virtual Machine
Your computer sends the request to your router, which then sends it out onto the Internet. At the hardware level of your network card, though, your network card is only looking at other MAC addresses for interfaces on the same network. Bear in mind that each network interface has its own MAC address.
So, on a typical laptop with both a Wi-Fi radio and a wired Ethernet port, the wireless and wired network interface each have their own unique MAC addresses. Most network cards allow you to set a custom MAC address from their configuration panes in the Device Manager, although some network drivers may not support this feature. First, open the Device Manager. The host mouse pointer will disappear, and your mouse will drive the guest's pointer instead of your normal mouse pointer.
Note that mouse ownership is independent of that of the keyboard. Even after you have clicked on a titlebar to be able to enter text into the VM window, your mouse is not necessarily owned by the VM yet. Most importantly, the Additions will get rid of the second "guest" mouse pointer and make your host mouse pointer work directly in the guest. OSes expect certain key combinations to initiate certain procedures. Some of these key combinations may be difficult to enter into a virtual machine, as there are three candidates as to who receives keyboard input: the host OS, Oracle VM VirtualBox, or the guest OS.
Which of these three receives keypresses depends on a number of factors, including the key itself.
Host OSes reserve certain key combinations for themselves. As the X server intercepts this combination, pressing it will usually restart your host graphical user interface and kill all running programs, including Oracle VM VirtualBox, in the process. If, instead, you want to send these key combinations to the guest OS in the virtual machine, you will need to use one of the following methods:.
Use the items in the Input , Keyboard menu of the virtual machine window.
network - Is the MAC address of my VM different to the MAC address of the host? - Ask Different
The latter will only have an effect with Linux or Oracle Solaris guests, however. This menu also includes an option for inserting the Host key combination. Use special key combinations with the Host key, normally the right Control key. Oracle VM VirtualBox will then translate these key combinations for the virtual machine:. For some other keyboard combinations such as Alt-Tab to switch between open windows, Oracle VM VirtualBox enables you to configure whether these combinations will affect the host or the guest, if a virtual machine currently has the focus.
This is a global setting for all virtual machines and can be found under File , Preferences , Input. While a virtual machine is running, you can change removable media in the Devices menu of the VM's window. But as the Settings dialog is disabled while the VM is in the Running or Saved state, the Devices menu saves you from having to shut down and restart the VM every time you want to change media. You can resize the virtual machine's window when it is running. In that case, one of the following things will happen:. If you have scaled mode enabled, then the virtual machine's screen will be scaled to the size of the window.
This can be useful if you have many machines running and want to have a look at one of them while it is running in the background. Alternatively, it might be useful to enlarge a window if the VM's output screen is very small, for example because you are running an old OS in it. The aspect ratio of the guest screen is preserved when resizing the window. To ignore the aspect ratio, press Shift during the resize operation.
If you have the Guest Additions installed and they support automatic resizing , the Guest Additions will automatically adjust the screen resolution of the guest OS. For example, if you are running a Windows guest with a resolution of x pixels and you then resize the VM window to make it pixels wider, the Guest Additions will change the Windows display resolution to x Otherwise, if the window is bigger than the VM's screen, the screen will be centered.
If it is smaller, then scroll bars will be added to the machine window. When you click on the Close button of your virtual machine window, at the top right of the window, just like you would close any other window on your system, Oracle VM VirtualBox asks you whether you want to save or power off the VM. Save the machine state: With this option, Oracle VM VirtualBox freezes the virtual machine by completely saving its state to your local disk. When you start the VM again later, you will find that the VM continues exactly where it was left off. All your programs will still be open, and your computer resumes operation.
Saving the state of a virtual machine is thus in some ways similar to suspending a laptop computer by closing its lid. Send the shutdown signal. This will send an ACPI shutdown signal to the virtual machine, which has the same effect as if you had pressed the power button on a real computer. Power off the machine: With this option, Oracle VM VirtualBox also stops running the virtual machine, but without saving its state.
This is equivalent to pulling the power plug on a real computer without shutting it down properly. If you start the machine again after powering it off, your OS will have to reboot completely and may begin a lengthy check of its virtual system disks. As a result, this should not normally be done, since it can potentially cause data loss or an inconsistent state of the guest system on disk. In that case, powering off the machine will not disrupt its state, but any changes made since that snapshot was taken will be lost. The Discard button in the VirtualBox Manager window discards a virtual machine's saved state.
This has the same effect as powering it off, and the same warnings apply. VM groups enable the user to create ad hoc groups of VMs, and to manage and perform functions on them collectively, as well as individually. Select multiple VMs and select Group from the right-click menu. This command creates a group "TestGroup" and attaches the VM "vm01" to that group. Detach a VM from the group, and delete the group if empty.
For example:. This command detaches all groups from the VM "vm01" and deletes the empty group. This command creates the groups "TestGroup" and "TestGroup2", if they do not exist, and attaches the VM "vm01" to both of them. With snapshots, you can save a particular state of a virtual machine for later use. At any later time, you can revert to that state, even though you may have changed the VM considerably since then. A snapshot of a virtual machine is thus similar to a machine in Saved state, but there can be many of them, and these saved states are preserved.
To see the snapshots of a virtual machine, click on the machine name in VirtualBox Manager. Then click the List icon next to the machine name, and select Snapshots. Until you take a snapshot of the machine, the list of snapshots will be empty except for the Current State item, which represents the "now" point in the lifetime of the virtual machine.
Take a snapshot. This makes a copy of the machine's current state, to which you can go back at any given time later. The snapshots window is shown. Do one of the following:.
The virtual machine MAC address changes under Virtual PC…
Click the Take icon. Right-click on the Current State item in the list and select Take. In either case, a window is displayed prompting you for a snapshot name. This name is purely for reference purposes to help you remember the state of the snapshot. For example, a useful name would be "Fresh installation from scratch, no Guest Additions", or "Service Pack 3 just installed".
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Your new snapshot will then appear in the snapshots list. Underneath your new snapshot, you will see an item called Current State , signifying that the current state of your VM is a variation based on the snapshot you took earlier. If you later take another snapshot, you will see that they are displayed in sequence, and that each subsequent snapshot is derived from an earlier one.