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How to use Migration Assistant to transfer files [ Guide ]


Summary

You can use Migration Assistant to transfer important information, such as user accounts, applications, network and computer settings, and files, from one Mac computer to another via a FireWire cable, ThunderBolt cable, or via an Ethernet or wireless network.
Note: The instructions in this article refer to Migration Assistant, but they also apply to migrations performed using the Setup Assistant. Setup Assistant starts the first time you start up your new Mac and helps you enter your Internet information and set up a user account on your computer. If you don't use Setup Assistant to transfer information when you first setup your new Mac, you can do it later using Migration Assistant. 
You can connect your Macs in one of four ways to transfer information with Migration Assistant:
  • FireWire or ThunderBolt
  • Wireless (Wi-Fi) or Ethernet
  • Time Machine backup or other disk
Before you begin the migration
  • If you're using a portable Mac, make sure the power cable is connected.
  • Run Software Update on the source Mac to confirm that the latest updates are installed.
  • On the source (original) Mac, make sure that you have the latest versions of any third-party software.
  • On the source Mac, open System Preferences, click Sharing, and make sure there is a name in the Computer Name field.
  • Do not let either computer go to sleep while you are attempting to migrate. To disable sleep: 
    1. Choose System Preferences from the Apple () menu. 
    2. Choose Energy Saver from the View menu.
    3. Adjust the "Computer sleep:" slider to Never.
  • To use Ethernet for migration, connect the two computers with a single Ethernet cable; you don't need to connect the computers to a hub, switch, or router. This may be faster than using a wireless connection. For the best experience, be sure to attach your source and target Macs to the wired network before you start.
  • If you choose a wireless migration, make sure you are on the best wireless connection available. Use the Signal Strength meter in the upper right corner of your screen to find a location that provides the best signal to your source computer before you start. You may also want to eliminate potential sources of interference as well. The best wireless migration experience will be on an 802.11n network.
Migrating using FireWire or ThunderBolt 
Note: If migrating from Mac OS X v10.4 to OS X Lion, see the Additional Information section below.
  1. Make sure both computers are connected via FireWire or ThunderBolt.
  2. Restart the source (original) Mac while pressing and holding the "T" key.
  3. If Migration Assistant isn't already open on your target (new) Mac, open Migration Assistant (located in /Applications/Utilities/), then click Continue.
  4. When the target Mac asks you for a migration method, select "From another Mac, PC, Time Machine backup, or other disk", and click Continue.
  5. Type in your admin password when prompted, and click OK.
  6. Select "From a Time Machine backup or other disk".
  7. Select the system that you would like to migrate.
  8. Your target Mac will ask you to select items to migrate.
  9. You can customize your selection by clicking to expand the disclosure triangles.

     
  10. After you click Continue, the Migration Assistant will begin to transfer files to your new Mac. The amount of time that it takes for migration to complete depends on the amount of data being transferred.
Note: To view documents that were migrated, choose Log Out from the Apple () menu, then login as the migrated user. The migrated documents will be located in the migrated user's home folder.

Wireless (Wi-Fi) or Ethernet migration
  1. Make sure that the source Mac and target Macs are connected to the same network, either wirelessly or via Ethernet. (You can directly connect the two Macs via an Ethernet cable if both are Ethernet capable. To make MacBook Air Ethernet capable, connect using the Apple USB Ethernet Adapter.)
  2. If Migration Assistant isn't running on the target (new) Mac, open Migration Assistant (located in /Applications/Utilities/), then click Continue.
  3. On the target Mac select "From another Mac, PC, Time Machine backup or other disk"
  4. Type in your admin password when prompted and click OK.
  5. When the target Mac asks you for a migration method, select "From another Mac or PC ", then click Continue.
     
  6. You will see a screen looking for Other Computers.
  7. On the source Mac, open Migration Assistant (located in /Applications/Utilities/), select "To Another Mac", and select Continue.
    Migration Assistant introductory screen
  8. Type in your admin password when prompted and click OK.
     
  9. On the Target Mac, close all other applications, then click Continue to start the migration options.
  10. A passcode should appear on the target Mac in the Connect Your Computers screen, as shown below.
  11. On the source Mac, confirm that the password matches and click Continue.
  12. On the source Mac, close all other applications, then click Continue to start the migration options.
  13. The target Mac will prompt you to Select Items to Migrate.
  14. You can customize your selection by clicking to expand the disclosure triangles.

     
  15. After you click Continue, the Migration Assistant will begin to transfer files to the target Mac. The amount of time that it takes for migration to complete depends on the amount of data being transferred and the speed of the network.
Note: To view documents that were migrated, choose Log Out from the Apple () menu, then login as the migrated user. The migrated documents will be located in the migrated user's home folder.

Time Machine or other disk migration
  1. If Migration Assistant isn't running on the target (new) Mac, open Migration Assistant (located in /Applications/Utilities/), select "From another Mac, PC, Time Machine backup, or other disk" then click Continue.
  2. Connect your external hard drive if necessary.
  3. Type in your admin password when prompted and click OK.
  4.  When the target Mac asks you for a migration method, select "From a Time Machine backup or other disk", then click Continue.

     
  5. Select the Drive, Time Machine backup, or Time Capsule. If you select Time Capsule you will be prompted to enter the Time Capsule password. After entering the password, select the Time Machine backup.
     
  6. Close all other applications on the source Mac, then click Continue to start the migration options.

     
  7. The source Mac will ask you to select items to migrate.
  8. You can customize your selection by clicking to open the disclosure triangles.

     
  9. After you click Continue, the Migration Assistant will begin to transfer files to the target Mac. The amount of time that it takes for migration to complete depends on the amount of data being transferred and the speed of the network.
Note: To view documents that were migrated, choose Log Out from the Apple () menu, then login as the migrated user. The migrated documents will be located in the migrated user's home folder.

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