如果您有新的MacBook、i Mac或Mac mini，您可能需要将数据从旧Mac传输到新计算机。但是，您不必手动复制所有内容。
了解如何在 macOS 中快速使用迁移助手(Migration Assistant)将文档、应用程序、用户帐户和系统设置从旧Mac移动到新Mac。
相关(Related)：你身边有旧电脑吗？了解(Learn)如何将数据从 Windows PC 传输到新 Mac(transfer data from a Windows PC to a new Mac)。
准备迁移
在设置新 Mac 期间或之后，(Mac)可以从旧 Mac 复制用户帐户、文档、程序和设置(Mac)。但是，在开始之前，您必须为前面的任务准备两个设备。
更新系统软件(Update System Software)
更新旧Mac上的系统软件可确保您在迁移过程中遇到的兼容性问题更少。打开系统偏好设置，(System Preferences, )选择软件更新(Software Update)，然后选择任何待处理更新旁边的立即更新。( Update Now)如果您已经设置了新Mac，最好也对其进行更新。
连接到同一个 Wi-Fi 网络(Connect to the Same Wi-Fi Network)
虽然可以通过Thunderbolt和以太网传输数据，但您可以通过使用(Ethernet)Wi-Fi来避免使用电缆。确保两台(Make)Mac(Macs)上的Wi-Fi模块都处于活动状态，并且它们连接到同一个Wi-Fi网络。
注意(Note)：如果您正在设置新Mac ，您可以选择在使用(Mac)Migration Assistant之前将其连接到无线网络。
关闭防病毒软件(Turn Off Antivirus Software)
如果您在旧Mac(Mac)上安装了第三方防病毒实用程序，请在继续操作之前将其禁用，以避免出现连接问题。在菜单栏上选择它的状态图标，然后寻找一个可以让您暂时关闭它的选项。此外，关闭新Mac上的任何.
为旧 Mac 命名(Name the Old Mac)
要通过Migration Assistant(Migration Assistant)启用发现，您必须将旧Mac命名。为此，请打开Apple 菜单( Apple menu )并选择系统偏好设置(System Preferences)>共享(Sharing)。然后，将可识别的名称添加到“计算机名称(Computer Name)”字段。
连接到电源(Connect to a Power Source)
在Mac(Macs)之间移动大量数据可能需要相当长的时间。如果您要迁移到MacBook(MacBook)、MacBook Pro或MacBook Air或从 MacBook Air 迁移，请将其连接到电源以避免电池耗尽。
使用迁移助手
如果您尚未在新Mac上使用(Mac)设置助理(Setup Assistant)，您可以在迁移助理(Migration Assistant)屏幕上暂停并立即开始迁移数据。或者，您可以在设置设备后访问迁移助手并仍然迁移您的数据。(Migration Assistant)您还必须在旧Mac上同时使用(Mac)迁移助手(Migration Assistant)。因此，将两台Mac 并排(Macs)放置，然后按照以下步骤进行操作。
提示(Tip)：如果您使用Time Machine，您可以直接从外部驱动器将数据恢复到新 Mac，(restore data to the new Mac directly from the external drive)而无需与旧Mac进行交互。
1.在新Mac和旧Mac上打开(Mac)迁移助手(Migration Assistant)。为此，请打开Launchpad并选择Other > Migration Assistant。或者，您可以通过 Mac 的Utilities文件夹（位于Finder > Applications中）启动它。
同样，如果您仍在使用新Mac上的(Mac)设置助理(Setup Assistant)，您将在连接到Wi-Fi后立即在步骤4中遇到迁移助理(Migration Assistant)。
2.在两台Mac上的(Macs)Migration Assistant主屏幕上选择Continue。
3. 输入管理员密码（如果出现提示）并选择OK。
4. 在新Mac和旧Mac上选择正确的传输模式，然后选择继续(Continue)。
新 Mac ：选择(New Mac)从 Mac、Time Machine 备份或启动磁盘(From a Mac, Time Machine backup, or Startup disk)旁边的单选按钮。
旧 Mac ：选择到(Old Mac)另一台 Mac(To another Mac)旁边的单选按钮。
5. 在新 Mac 的 Migration Assistant 上选择您的旧(Mac)Mac ，(Migration Assistant)然后(Mac)选择Continue。如果它未能显示，请将设备移近并仔细检查它们是否在同一个无线网络上 - 如果需要，请选择更改(Change)以切换网络。
6.在旧 Mac 上选择继续(Continue)，确认两台Mac(Macs)上的安全代码匹配。
7. 选中您要传输到新计算机的每种信息类型旁边的框 - 应用程序、用户帐户（包括文档）以及与系统相关的文件和设置。
8. 选择继续(Continue)启动数据传输。但是，在迁移用户帐户时，新Mac上的(Mac)迁移助手(Migration Assistant)会要求您：
- (Set)为您要转移的每个管理员帐户设置密码。
- 如果您已经设置了新Mac，并且旧Mac有一个同名的用户帐户，请在重命名和替换它之间进行选择。
9.等待(Wait)迁移助手(Migration Assistant)完成将信息从旧计算机传输到新计算机。
10.一切完成后选择完成(Done)以退出新Mac上的(Mac)迁移助手(Migration Assistant)。在旧Mac上，选择退出(Quit)。
您仍然可以使用旧 Mac
迁移数据后，您可以根据需要继续使用旧Mac — 它仍会保留您的所有数据。如果您打算出售或赠送它，请不要忘记擦除 Mac 并将其恢复为出厂默认设置(wipe the Mac and restore it to factory defaults)。
How to Transfer Data From Old Mac to New Mac
If you got a new MacBook, іMac, or Mac mini, yоu might need to transfer data from your old Mac to your new comрuter. However, you don’t hаve to copy everything over manuallу.
Learn how to quickly use the Migration Assistant in macOS to move documents, applications, user accounts, and system settings from your old Mac to your new Mac.
Related: Do you have an old PC around? Learn how to transfer data from a Windows PC to a new Mac.
Preparing for Migration
It’s possible to copy over user accounts, documents, programs, and settings from your old Mac during or after setting up your new Mac. However, before you begin, you must prepare both devices for the task ahead.
Update System Software
Updating the system software on the old Mac ensures you encounter fewer compatibility issues during migration. Open System Preferences, choose Software Update and select Update Now next to any pending updates. If you’ve already set up your new Mac, it’s best to update it as well.
Connect to the Same Wi-Fi Network
Although it’s possible to transfer data via Thunderbolt and Ethernet, you can avoid using cables by using Wi-Fi. Make sure that the Wi-Fi module is active on both Macs and that they are connected to the same Wi-Fi network.
Note: If you’re in the process of setting up your new Mac, you will have the option of connecting it to a wireless network before arriving at the Migration Assistant.
Turn Off Antivirus Software
If you have a third-party antivirus utility on the old Mac, disable it before you proceed to avoid connectivity issues. Select its status icon on the menu bar and look for an option that lets you turn it off temporarily. Also, turn off any on your new Mac.
Name the Old Mac
To enable discovery through the Migration Assistant, you must name the old Mac. To do that, open the Apple menu and select System Preferences > Sharing. Then, add a recognizable name to the Computer Name field.
Connect to a Power Source
Moving large amounts of data between Macs can take a considerable time. Connect it to a power source to avoid running out of battery if you’re migrating to or from a MacBook, MacBook Pro, or MacBook Air.
Use Migration Assistant
If you’ve yet to work your way through the Setup Assistant on your new Mac, you can pause at the Migration Assistant screen and begin migrating data right away. Or, you can access Migration Assistant after setting up the device and still migrate your data. You must also use Migration Assistant concurrently on your old Mac. So place both Macs next to each other and work your way through the steps below.
Tip: If you use Time Machine, you can restore data to the new Mac directly from the external drive without having to interact with the old Mac at all.
1. Open Migration Assistant on the new Mac and the old Mac. To do that, open Launchpad and select Other > Migration Assistant. Or, you can launch it via your Mac’s Utilities folder (located within Finder > Applications).
Again, if you’re still working through the Setup Assistant on your new Mac, you will come across the Migration Assistant in step 4 immediately after connecting to Wi-Fi.
2. Select Continue on the main Migration Assistant screen on both Macs.
3. Enter the administrator password (if prompted) and select OK.
4. Pick the correct transfer mode on your new Mac and old Mac and select Continue.
New Mac: Select the radio button next to From a Mac, Time Machine backup, or Startup disk.
Old Mac: Select the radio button next to To another Mac.
5. Select your old Mac on the Migration Assistant of the new Mac and choose Continue. If it fails to show up, move the devices closer and double-check if they’re on the same wireless network—select Change to switch networks if needed.
6. Confirm that the security codes on both Macs match by selecting Continue on the old Mac.
7. Check the boxes next to each type of information you want to transfer to the new computer—applications, user accounts (including documents), and system-related files and settings.
8. Select Continue to initiate the data transfer. However, when migrating user accounts, the Migration Assistant on the new Mac will require you to:
- Set up passwords for each administrator account you want to transfer.
- If you’ve already set up your new Mac and the old Mac has a user account with the same name, choose between renaming and replacing it.
9. Wait until the Migration Assistant finishes transferring information from your old computer to the new computer.
10. Select Done once everything is complete to exit the Migration Assistant on the new Mac. On the old Mac, select Quit.
You Can Still Use Your Old Mac
After migrating your data, you can continue using your old Mac if you want—it will still have all your data. If you plan on selling or giving it away, don’t forget to wipe the Mac and restore it to factory defaults.
