Wednesday, April 27, 2005

Changing the MAC Address in W2K and XP

Changing the MAC address in W2K and XP

(This page stolen from
because I wanted a copy in my notes here so I wouldn't lose it.)

Method 1:

This is depending on the type of Network Interface Card (NIC) you have. If
you have a card that doesn't support Clone MAC address, then you have to go to
second method.

    1. Goto Start->Settings->Control Panel and double click on Network and
      Dial-up Connections.

    2. Right click on the NIC you want to change the MAC address and click on

    3. Under"General" tab, click on the "Configure" button.

    4. Clickon "Advanced" tab.

    5. Under "Property section" you should see an item called "Network Address" or "Locally Administered Address", click on it.

    6. On the right side, under "Value" type in the New MAC address you want to
      assign to your NIC. Usually this value is entered without the "-" between the MAC address numbers.

    7. Go to command prompt and type in "ipconfig /all" or "net config rdr" to
      verify the changes. If the changes are not materialized, then use the second method.

    8. If successful, reboot your systems.

Method 2:

This method requires some knowledge on the Windows Registry. If you are not familiar with Windows Registry, just use the SMAC tool to change the MAC addresses, or consult with a technical person before you attempt on the following steps. Also, make sure you have a good backup of your registry.

a. Goto command prompt and type "ipconfig /all" and

I. Record the Description for the NIC you want to change.

II. Record the Physical Address for the NIC you want to change.
Physical Address is the MAC Address

Figure 1.

b. Goto command prompt and type "net config rdr" and you should see
something like

Figure 2.

c. Remember the number between the long number (GUID) inside the { }.
For example, in the above "net config rdr" output, for MAC address
"0C095ECB793", you should remember {1C9324AD-ADB7-4920-B02D-AB281838637A}. You can copy and paste it to the Notepad, that's probably the easiest way. (See figure 2.)

d. Go to Start -> Run, type "regedt32" to start registry editor.
Do not use "Regedit".

e. Do a BACKUP of your registry in case you screw up the following steps.
To do this

I. Click
on "HEY_LOCAL_MACHINE on Local Machine" sub-window

II. Click
on the root key "KEY_LOCAL_MACHINE".

III. Click
on the drop-down menu "Registry -> Save Subtree As" and save the backup
registry in to a file. Keep this file in a safe place.

f. Go to "KEY_LOCAL_MACHINE\SYSTEMCurrentControlSet\Control\Class{4D36E972-E325-11CE-BFC1-
08002BE10318}. Double click on it to expand the tree. The
subkeys are 4-digit numbers, which represent particular network adapters. You should see it starts with 0000, then 0001, 0002, 0003 and so
on. (See figure 3.)

Figure 3.

g. Go through each subkey that starts with 0000. Click on 0000, check DriverDesc
keyword on the right to see if that's the NIC you want to change the MAC
address. The DriveDesc should match the Description you
recorded from step (a.-I.). If you are not 100% sure about the DriverDesc,
then you can verify by checking if the NetCfgInstanceID keyword value
matches the GUID from step (c).

If there is no match, then move on to 0001, 0002, 0003, and so on, until you
find the one you want. Usually 0000 contains the first NIC you
installed on the computer.

In this demonstration, 0000 is the NIC I selected. (See figure 3.)

h. Once you selected the subkey (i.e. 0000), check if there is a keyword "NetworkAddress" exist in the right side of the window. (See figure 3.)

I. If "NetworkAddress" keyword does not exist, then create this new keyword:

i. Click on the drop down menu "Edit -> Add Value".

ii. In the Add Value window, enter the following value then click OK. (See figure 4.)

Value Name: = NetworkAddress

Data Type: = REG_SZ

Figure 4.

iii. String Editor window will pop up at this time (see figure

iv. Enter the new MAC address you want to modify. Then click OK.

(There should not be any "-" in this address. Your entry should only consist of 12 digits as seen in the figure 5.)

II. If "NetworkAddress" keyword exists, make sure it shows the
keyword type is REG_SZ, and it should show as NetworkAddress:REG_SZ: .
This keyword might not have a value at this time.

i. D
ouble click on the keyword NetworkAddress
and the String Editor window will pop up. (See Figure 5.)

ii. Enter the new MAC address you want to modify. Then click OK.

(There should not be any "-" in this address. Your entry should only consist of 12 digits as seen in the figure 5.)

Figure 5.

j. There are 2 ways to make the new MAC address active. Method I does
not require a system reboot:

I. Goto Start->Setting->Control Panel, and double click on
"Network Neighborhood".

WARNING: Make sure you understand that you WILL lose the
network connection after completing step "ii." below, and if you have a DHCP client, you will get a new IP address after completing step "iii."

i. Select the Network Adaptor you just changed the MAC address.

ii. Right click on the selected Network Adaptor and click "Disable."

Verify the status column for this adaptor changes to "Disabled"

iii. Right click on the selected Network Adaptor and click "Enable."

Verify the status column for this adaptor changes to "Enabled"

iv. If for any reason it cannot be disabled or re-enabled, you have to reboot your system to make the changes effective.

II. Reboot your Windows system.

k. Once completing step j (if rebooting the system, wait until the reboot is
completed), go to command prompt, type "ipconfig /all" to confirm
the new MAC address.

Restore The TRUE Hardware burned-in MAC Address:

  1. Remove the entry you added:

  1. If you followed Method 1, then go back to the advanced properties window and remove the entry you add.

  2. If you followed Method 2, then remove the "NetworkAddress" keyword you added in the registry.

  1. Usestep (j) above to activate the change you make.

  2. Once rebooted, go to command prompt, type "ipconfig /all" to confirm
    the original MAC address.

If MAC Address changes does not work:

If for whatever reason the MAC address cannot be changed using method 2, make sure you restore the registry setting by following the "Restore The TRUE Hardware burned-in MAC Address" instruction above. If necessary, restore the registry you just backed-up to get your system back to the original state. You can do this by clicking on the drop-down menu "Registry->Restore", and restore your backup registry file.

or use SMAC.

Thursday, April 21, 2005

Dari pagi berlari sampai malam

Nih la idup... pagi bangun tido, terus bergegas dtg lab... awal gak pagi tadi, kol 8 sampai skolah. Plan semalam nak dtg kol 6-7 pagi, tp terbangun lambat aa... 7:02AM baru terbangun... nih kes tutup jam loceng nyer pasal aa nih.

Sampai skolah, 8:10 dah masuk clean room, buat HCl etching utk sample aku 2 ari lepas. Then load dlm evaporation beam chamber for Al deposition. Berpusing kepala, tangan ngan kaki nak kejar mase nyer pasal... kol 8:05AM (jam clean room) abis setting, terus berlari keluar pegi lecture hall utk kelas Yamamoto sensei. Alhamdulillah la jugak sbb partner Jepun duk sebelah best la jugak... Yonaha pun ade kat depan jer, so taklah cuak sgt cam kelas first time last week. Jepun tu pun baik jer ajar aku... kelas nyer kerja pun tak teruk sgt hari nih... kire menarik aa jugak.

Abis kelas, berlari balik lab... Takashima n Orioka dah pun ada tunggu aku, BAGUS!!! "Kol 11 nnt kite stat", aku kate kat diorang aa nih. Then, stat la kerja aku... dari deposition Al, lift-off sampai RTA annealing. Lepas diorang balik dlm kol 5:30 PM tadi, aku sambung lagi photolithography dan sekarang nih tgh vacum utk Ni/Au deposition. Lama gak nunggu nih... dlm 90 ke 120 min. Makan aa megi dulu, ntah satu hape tak telan lagi hari nih... kebulur betul aku nih!

Hmm... pasal scholarship, aku dah jumpa dah Mr Yamaguchi (Foreign Student Office) siang tadi, memacam die tanyer aku pasal visa ari tu... scholar pun banyak die tanyer. Aku skarang nih jadik private student katenyer. Pasal JPA x approve lagi scholarship aku pun die dah tau... aku amik die nyer tel & fax number skali utk Husna (KUKUM) antar financial affidavit kat die nanti.

Okay aa dulu... makan & buat report electromagnetic nih sementara tunggu abis vacum. Bye & wassalam ;)

Monday, April 18, 2005

Xperiment lagi...

Huh... lama sungguh dok tulih blog nih. Nih sesaje bosan sambil makan meggi kat lab nih, tulih aa kejap. Pendape aa nok tulih nih... hmm... ari nih cam biase aa buat xperimen. Ingat tadi nak balik jer skali ngan Orioka (B4) lepas ajar die cara guna thermal resistance annealing, tp pk pk balik... baik aku terus buat photolithography utk TLM patterning. So, jimat sket masa utk esok. Abis semua TLM patterning malam nih utk 9 keping sample tu, esok tgh hari boleh start vacumm utk Al deposition. Abis kelas Opto-electronic kol 2:30PM tu, boleh deposit, then dlm kol 4:30 gitu dah boleh buat RTA anneal. Tp aku blank nih... nak anneal esok ker, lusa sbb lepas anneal tu kena teruskan xperiment tu dlm masa 6 jam tanpa henti utk elakkan sample tu rosak. Hmmm... peninn gak nih. Okay aa dulu, sambung lagi lain kali... abis dah mase nih.

Sunday, April 17, 2005


Test after updating to new domain