VMware Workstation 5.5 Maintaining and Changing the MAC Address of a Virtual Machine When a virtual machine is powered on, VMware Workstation automatically assigns each of its virtual network adapters an Ethernet MAC address. MAC stands for media access control. A MAC address is the unique address assigned to each Ethernet network device. The software guarantees that virtual machines are assigned unique MAC addresses within a given host system. In most cases, the virtual machine is assigned the same MAC address every time it is powered on, so long as the virtual machine is not moved (the path and filename for the virtual machine's configuration file must remain the same) and no changes are made to certain settings in the configuration file. In addition, VMware Workstation does its best, but cannot guarantee, to automatically assign unique MAC addresses for virtual machines running on multiple host systems.

Avoiding MAC Changes To avoid changes in the MAC address automatically assigned to a virtual machine, you must not move the virtual machine's configuration file. Moving it to a different host computer or even moving it to a different location on the same host computer changes the MAC address. You also need to be sure not to change certain settings in the virtual machine's configuration files. If you never edit the configuration file by hand and do not remove the virtual Ethernet adapter, these settings remain untouched. If you do edit the configuration file by hand, be sure not to remove or change the following options: ethernetn.generatedAddress ethernetn.addressType ethernetn.generatedAddressOffset uuid.location uuid.bios ethernetn.present In these options, n is the number of the virtual Ethernet adapter, for example ethernet0.

Note: To preserve a virtual Ethernet adapter's MAC address, you also must be careful not to remove the adapter. If you remove the adapter, then recreate it, the adapter may receive a different MAC address.

Manually Assigning a MAC Address If you want to guarantee that the same MAC address is assigned to a given virtual machine every time, even if the virtual machine is moved, or if you want to guarantee a unique MAC address for each virtual machine within a networked environment, you can assign the address manually instead of allowing VMware Workstation to assign it automatically. To assign the same, unique MAC address to any virtual machine manually, use a text editor to remove three lines from the configuration file and add one line. The configuration file has a.vmx extension at the end of the filename. On a Linux host, a virtual machine created with an earlier VMware product may have a configuration file with a.cfg extension.

Remove the three lines that begin with the following from the configuration file: ethernetn.generatedAddress ethernetn.addressType ethernetn.generatedAddressOffset In these options, n is the number of the virtual Ethernet adapter — for example ethernet0. Add the following line to the configuration file: ethernetn.address = 00:50:56:XX:YY:ZZ In this line, XX must be a valid hexadecimal number between 00h and 3Fh, and YY and ZZ must be valid hexadecimal numbers between 00h and FFh. Because VMware Workstation virtual machines do not support arbitrary MAC addresses, you must use the above format. Top chinese music charts in kazakhstan 2017. So long as you choose a value for XX:YY:ZZ that is unique among your hard-coded addresses (where XX is a valid hexadecimal number between 00h and 3Fh, and YY and ZZ are valid hexadecimal numbers between 00h and FFh), conflicts between the automatically assigned MAC addresses and the manually assigned addresses should never occur.

This is really bad. On my Win 7 RC test system, the VXP session is limited to 16-bit color depth, ClearType does not work, and screen update performance is quite poor. I understand there is a TS session, but I can have Remote Desktop sessions between Win7 machines on my network with full Aero support, 32-bit color, transparency, etc. How is it possible that this cannot be achieved between two processes running on the same machine? Both VPC 7 and Sun's VBox software provide much better graphics support. I know Microsoft's target audience is business customers, and maybe graphics aren't that important for legacy LOB apps, but there will be a big demand for this from tech-savy consumers too, you just watch.

And this performance issue will eviscerate the product. You cannot change resolution because you are connecting to a TS session, that's also by design. If you disable the IC, you can change resolution and color depth.

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My experience is that you can drag the XpM window to be larger or smaller. Also, you can manually edit the.vmc file to be the desired size (when that vm is not running). I have a 1920x1200 monitor, and have the vm set to 1600x1024. It may help to set the advanced settings for 'Visual Effects' to 'Best Performance' over 'Best Appearance'.

Yep, the screen size is dynamic, you can just click the Windows Border of the Virtual XP window and change the window size to pretty much anything (realistic). What I do miss in terms of graphics is DirectX/Direct3D support though. It's not just Games that take advantage of DirectX (or even require it) but also many business applications especially in the area of design where graphics are important. There is a third party virtualization solution on the market that offers not too bad DirectX support, I really hope Windows Virtual PC can offer this soon too. Then, but only then, Windows XP Mode will be a 'killer feature' for the mass market! In the current situation due to the lack of 64-bit guests and DirectX support it is pretty much useless for personal and business use in my situation since there are no apps not running on Windows 7 and not requiring DirectX and/or 64-bit.

It's real shame graphic card cannot be shared between virtual machine and host system. Will it happen in near future? I heard some VMs give option to dedicate one of your graphics cards for VM, but then you need to have at least two. Can someone explain why such multicore devices like current GPU cannot be shared?

Is that driver, driver model or hardware limitation? Here is what I found to get direct access to a graphics card inside of a vm. (on the hardware side). 'An input/output memory management unit (IOMMU) enables guest virtual machines to directly use peripheral devices, such as ethernet and accelerated graphics cards, through DMA and interrupt remapping. Both AMD and Intel have released specifications. The AMD specification labels this technology 'IOMMU' (an acronym for the common name of this form of virtualization) while Intel has called their implementation 'Intel's Virtualization Technology for Directed I/O' (VT-d).'

My CPU, an Intel i7 has this VT-d. So it would appear the only thing missing on my system to directly use my second graphics card is a Virtualization program that supports IOMMU. Just wanted to update the thread since Windows Virtual PC has gone RTM. I'm a long time VirtualPC 2007 user and was pretty happy with VGA performance inside of my XP virtual machines. The upgrade bug bit me a few days ago so I decided to move my VMs to the new Windows Virtual PC. The process was pretty painless.

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Uninstall the integration components, uninstall VirtualPC 2007 sp1, install Windows Virtual PC, install integration components. I never used any of the betas so it took me a while to figure out I needed to disable the integration components before I could change the resolution of the VM. Once I did that I immediately noticed the poor VGA performance. Simply dragging a window around the desktop produces screen tearing. Any type of motion within a youtube or hulu video produces tearing. This was certainly not the case with VirtualPC 2007 under Vista SP1, SP2 or Win7 RTM. The performance is bad enough that unless we get acknowledgment and a fix I'll be rolling back to VirtualPC 2007 SP1.

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I should also mention that I wasn't convinced that I hadn't done something wrong when I migrated my older VMs so my final test was to download the microsoft provided XPSP3 virtual machine. There was no difference. I still experienced window tearing and poor youtube performance. Full disclosure of hardware: Asus P5K vanilla Intel Q9450 8gig RAM Nvidia 9600GT Windows 7 Professional x64.