How to Change a Computer’s Mac Address in Windows with Screenshots

Source : wiki

There might be a time when you want to change the MAC address of your network adapter. The MAC address (Media Access Control address) is a unique identifier which is used to identify your computer in a network. Changing it can help you diagnose network issues, or just have a little fun with a silly name. See Step 1 below to learn how to change the MAC address of your network adapter in Windows.

Method 1

Device Manager

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    1

    Open the Device Manager. You can access the Device Manager from the Control Panel. It will be located in the System and Security section if you are using Category View.

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    2

    Expand the Network Adapters section. In your Device Manager, you will see a list of all of the hardware installed on your computer. These are sorted into categories. Expand the Network Adapters section to see all of your installed network adapters.

    • If you are not sure which adapter you are using, see Step 1 at the beginning of this article to find your device’s Description.
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    3

    Right-click on your adapter. Select Properties from the menu to open the network adapter’s Properties window.
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    4

    Click the Advanced tab. Look for the “Network Address” or “Locally Administered Address” entry. Highlight it and you will see a “Value” field on the right. Click the radio button to enable the “Value” field.

    • Not all adapters can be changed this way. If you can’t find either of these entries, you will need to use one of the other methods in this article.
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    5

    Enter your new MAC address. MAC addresses are 12-digit values, and should be entered without any dashes or colons. For example, if you want to make the MAC address “2A:1B:4C:3D:6E:5F”, you would enter “2A1B4C3D6E5F”.
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    6

    Reboot your computer to enable the changes. You can also disable and re-enable your adapter within Windows for the change to become effective without rebooting. Just sliding the Wi-Fi’s On/Off switch like the slider found on ThinkPads and VaiOs won’t satisfactorily disable/re-enable the card.
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    7

    Check that the changes took effect. Once you’ve rebooted the computer, open the Command Prompt and enter ipconfig /all and note the Physical Address of your adapter. It should be your new MAC address.

Method 2

Registry Editor

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    1

    Find your network adapter’s ID information. In order to easily identify your network adapter in the Windows Registry, you’ll want to gather some basic information about it through the Command Prompt. You can open the Command Prompt by typing “cmd” into the Run box (Windows key + R).

    • Type ipconfig /all and press Enter. Note the Description and Physical Address for the active network device. Ignore devices that aren’t active (Media Disconnected).
    • Type net config rdr and press Enter. Note the GUID, which is displayed between the “{}” brackets next to the Physical Address you recorded earlier.
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    2

    Open the Registry Editor. You can start the Registry Editor by opening the Run dialog box (Windows key + R) and typing “regedit”. This will open the Registry Editor, which will allow you to change the settings for your network card.

    • Making incorrect changes to the registry can cause your system to malfunction.
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    3

    Navigate to the registry key. Go to HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Class\{4D36E972-E325-11CE-BFC1-08002BE10318}. Expand it by clicking the arrow.
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    4

    Find your adapter. There will be several folders labeled “0000”, “0001”, etc. Open each of these and compare the DriverDesc field to the Description you noted in the first step. To be completely sure, check the NetCfgInstanceID field and match it with the GUID from the first step.
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    5

    Right-click on the folder that matches your device. For example, if the “0001” folder matches your device, right-click on the folder. Select New → String Value. Name the new value “NetworkAddress”.
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    6

    Double-click the new Network Address entry. In the “Value data” field, enter your new MAC address. MAC addresses are 12-digit values, and should be entered without any dashes or colons. For example, if you want to make the MAC address “2A:1B:4C:3D:6E:5F”, you would enter “2A1B4C3D6E5F”..
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    7

    Ensure that the MAC address is formatted properly. Some adapters (especially Wi-Fi cards) are unforgiving of MAC addresses changes if the first octet’s 2nd half isn’t a 2,6,A,E or begins with a zero. This requirement has been observed as far back as Windows XP and is formatted as:

    • D2XXXXXXXXXX
    • D6XXXXXXXXXX
    • DAXXXXXXXXXX
    • DEXXXXXXXXXX
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    8

    Reboot your computer to enable the changes. You can also disable and re-enable your adapter within Windows for the change to become effective without rebooting. Just sliding the Wi-Fi’s On/Off switch like the slider found on ThinkPads and VaiOs won’t satisfactorily disable/re-enable the card.
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    9

    Check that the changes took effect. Once you’ve rebooted the computer, open the Command Prompt and enter ipconfig /all and note the Physical Address of your adapter. It should be your new MAC address.[1]
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Change the CVM Name in Nutanix

Here are the steps to change the Display name:

Before doing this check if all services are up. Also check that the data resiliency is good.

  1. Find current CVM name:

$ virsh list –all

  1. Shutdown CVM:

$ virsh shutdown

  1. Take XML dump of the CVM to preserve configuration changes Name the file appropriately, based on the new name of the CVM.

$ virsh dumpxml > NTNX–CVM.xml

  1. Undefine CVM

$ virsh undefine

  1. Modify the NTNX–CVM.xml file to use the new name:

 

NTNX–CVM

  1. Define the CVM

$ virsh define NTNX–CVM.xml

  1. Start the CVM.

$ virsh start NTNX–CVM

  1. Configure autostart in KVM so the CVM boots up with the host

$ virsh autostart NTNX–CVM

P2V & V2V Conversion

P2V & V2V Conversion

Last Updated on 5 Jan. 2015, Total: 5 Products

An extensive Physical to Virtual, or Virtual to Virtual software product directory

  1. VMware vCenter Converter

    Use the wizard-driven interface of VMware vCenter Converter to convert your physical machines to virtual machines. VMware vCenter Converter converts Microsoft Windows based physical machines and third party image formats to VMware virtual machines. It also converts virtual machines between VMware platforms. Automate and simplify physical to virtual machine conversions as well as conversions between virtual machine formats with VMware… Read More

  2. Double-Take MOVE

    Double-Take Move allows you to migrate physical and virtual workloads with real-time replication from a single, intuitive user console. Protect your productivity with resource friendly technology that eliminates user and application downtime during migrations. Double-Take Move migrates your entire environment including the file system, permissions, attributes, compression and encryption settings without suspending production operations. It also moves database files regardless… Read More

  3. PlateSpin Migrate

    Physical-to-virtual (P2V) workload conversions should not be a one-time activity. P2V migrations are a critical component for the successful adoption of virtualization, but to ensure optimal data center efficiency, enterprises need the flexibility to move and rebalance workloads in any direction between physical and virtual hosts. PlateSpin PowerConvert allows anywhere-to-anywhere portability and protection for all workloads in the data center… Read More

  4. Microsoft P2V Migration

    Microsoft P2V Migration for Software Assurance uses the Microsoft Deployment Toolkit (MDT) and Sysinternals Disk2vhd to convert a user’s existing Windows XP or later client environment to a virtual hard disk (VHD), then automates the delivery of an updated and personalized Windows 7 operating system containing a virtual machine (VM) with the user’s previous Windows environment, applications, and Web browser… Read More

  5. Quest vConverter

    vConverter is a conversion solution that reduces the time and effort spent converting servers to the VMware, Microsoft, XenServer or Virtual Iron platforms. vConverter enables conversions without disrupting the source physical system during the conversion process. There are never any reboots, no need to visit machines being converted, no software to install on the source and no downtime. vConverter is… Read More

Free Tools for Virtualization

Free Tools

Last Updated on 25 Feb. 2016

A frequently updated list of useful virtualization freeware for network administrators

  1. Featured

    Altaro VM Backup v6 – Freeware Edition

    New v6 with VMware support! Altaro VM Backup (formerly Altaro Hyper-V Backup) is a hassle-free Virtual Machine backup software for Hyper-V and VMware. The intuitive interface allows you to set up and perform backups and restores easily. With Altaro VM Backup you will be scheduling and queuing jobs for your first VM backups in a matter of minutes. Back up… Read More

  2. Veeam Backup and Replication Free Edition for VMware and Hyper-v

    Cloning, copying or exporting a virtual machine (VM) can be time-consuming and resource intensive. And if you have to power off or pause the VM, it can be disruptive, too. But with VeeamZIP™ you can easily backup a VM for restore on any host. Whether you use VMware vSphere, Microsoft Hyper-V, or a combination of both, Veeam® Backup™ Free Edition… Read More

  3. VMTurbo Operations Manager Cloud Edition Free Trial

    VMTurbo Operations Manager is easily installed on the hypervisor/cloud platform of your choice within minutes. Cloud edition enables enterprise private cloud builders and cloud service providers to build and manage cloud infrastructures. The product understands priority and makes resource allocation decision across Organizational and Provider Virtual Datacenters, helping you to tier and assure service across a multi-tenant environment. Key features… Read More

  4. Netwrix Change Notifier for VMWare

    Enables you to control changes in your virtual environments by tracking changes to VMware virtual machine (VM) settings and the creation and deletion of VMs. 100% Free Tool… Read More

  5. Veeam Endpoint Backup FREE

    Veeam Endpoint Backup FREE is a standalone data-protection and disaster-recovery solution for physical machines (endpoints). It allows to protect entire endpoints, specific volumes and individual folders. It is able to perform a forever incremental backup without requiring a changed block tracking (CBT) file system driver… Read More

  6. NoMachine

    Turn your computer into your personal cloud. Take what’s important where you go, whether it’s at home or at the office. Wherever your desktop and your data is, you can reach it from the other side of the world in a few simple clicks. – Your own personal server, Private and secure, Access any time, anywhere and Share with who… Read More

  7. VMTurbo Virtual Health Monitor

    VMTurbo Virtual Health Monitor is a free real-time performance monitoring solution that can be deployed broadly across multiple hypervisor platforms. It enables you to gain visibility into your entire infrastructure, see and identify problems in real time, and generate performance and efficiency reports… Read More

  8. LoadMaster for Windows Azure

    The LoadMaster Load Balancer/ADC for Azure is simple to provision within the Azure IaaS platform. Provision through the Azure management portal, LoadMaster becomes a Public Endpoint, Connect Application Servers to LoadMaster for Azure on creation of the new instance, Start load balancing your workload… Read More

  9. RDPSoft Free Remote Desktop Admin Toolkit

    The RDPSoft Remote Desktop Admin Toolkit is a completely free set of 5 tools designed to ease the workload of Remote Desktop / Terminal Server administrators and other network admins. Keep an eye on how much bandwidth your users are using in their Remote Desktop sessions with the RDP Bandwidth Monitor. Quickly find and terminate the same hung processes in… Read More

  10. ObserveIT

    Record and Replay all remote user sessions on your network servers. Any remote access or console session is searchable and ready for playback! Protocol-agnostic: ObserveIT records Terminal Server, Citrix, Remote Desktop, SSH, VMware and more. ObserveIT makes easy work out of security audits by generating video and text logs for everything that happens on your servers. (Even for apps that… Read More

How to check if NUMA is enabled on ESX hardware?

You can check it by using ESXTOP:

1. Run esxtop

2. Press “m” to enter on memory statistics

3. Press “f” to change the fields displayed

4. Press “f” again to show NUMA related fields

If numa is enables, you will see values (like, 0, 1, 2, etc for each node) on the NHN column, like this image:

numa_esxtop_good.jpeg

(In this picture there is a VM running on 2 NUMA nodes).

If not, you will see the “-” on the NHN column:

no_numa_esxtop_good.jpeg
There is also a command to check directly if there are and how many are the NUMA nodes:

esxcli hardware memory get | grep NUMA

 

How to identify if ESXi is installed to SD card or local HDD?

In the vSphere client, Hosts and Clusters View (assuming vCenter), highlight the host in question. Configuration > Hardware > Storage > Change to Devices view. For each device, look down under device details, Primary Partitions, and look for the device that lists several partitions, including several “Legacy MBR” and a “VMware Diagnostic” partition. This should be the device that ESXi is installed on.

 

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