关机状态下按住command+R不放，再按开机键松手，选择需安装的语言，点击继续。连接Wi-Fi,点击磁盘工具里的第二个磁盘，选择中上方的抹掉选项卡。关闭上面的窗口，选择重新安装OSX即可。

Press and hold command+R in the shutdown state, then press the power button to release, select the language to be installed, and click Continue. Connect Wi-Fi, click the second disk in the disk tool, and select the Erase tab in the upper middle. Close the window above and select to reinstall OSX.

旧版mac怎么重装系统

How to reinstall the old mac

重装系统的操作方法和步骤如下：

The operation methods and steps for reinstalling the system are as follows:

1、首先，将U盘启动盘插入计算机，在启动时按Option键或Alt键，然后选择U盘启动盘，如下图所示，然后进入下一步。

1. First, insert the USB flash disk boot disk into the computer, press the Option key or Alt key during startup, and then select the USB flash disk boot disk, as shown in the following figure, and then enter the next step.

2、其次，完成上述步骤后，进入安装界面，单击“继续”按钮，如下图所示，然后进入下一步。

2. Secondly, after completing the above steps, enter the installation interface, click the "Continue" button, as shown in the following figure, and then enter the next step.

3、接着，完成上述步骤后，选择要安装系统的磁盘，然后单击“安装”按钮，如下图所示，然后进入下一步。

3. Then, after completing the above steps, select the disk to install the system, and then click the "Install" button, as shown in the following figure, and then enter the next step.

4、然后，完成上述步骤后，安装完成，计算机将自动重新启动，如下图所示，然后进入下一步。

4. Then, after the above steps are completed, the computer will restart automatically, as shown in the figure below, and then enter the next step.

5、随后，完成上述步骤后，单击“重新启动”按钮，如下图所示，然后进入下一步。

5. Then, after completing the above steps, click the "Restart" button, as shown in the following figure, and then enter the next step.

6、接着，完成上述步骤后，进入系统设置界面，选择“中国”区域，如下图所示，然后进入下一步。

6. Then, after completing the above steps, enter the system setting interface, select the "China" area, as shown in the following figure, and then enter the next step.

7、然后，完成上述步骤后，连接当前网络wifi，如下图所示，然后进入下一步。

7. Then, after completing the above steps, connect to the current network wifi, as shown in the figure below, and then enter the next step.

8、随后，完成上述步骤后，输入Apple

8. Then, after completing the above steps, enter Apple

ID和密码，如下图所示，然后进入下一步。

ID and password, as shown in the figure below, and then enter the next step.

9、最后，完成上述步骤后，系统重装就完成了，如下图所示。这样，问题就解决了。

9. Finally, after completing the above steps, the system reinstallation is complete, as shown in the figure below. In this way, the problem is solved.

苹果MAC系统没了怎么重装

How to reinstall Apple's MAC system

苹果mac系统重装步骤如下:

The steps to reinstall Apple's mac system are as follows:

1、在电脑处于关机状态下，按⌘+space，然后按一下电源键开机。

1. When the computer is turned off, press ⌘+space, and then press the power button to turn it on.

2、等待屏幕上的logo加载完毕，进入图二的界面点击右上角的WiFi图标。

2. Wait until the logo on the screen is loaded, enter the interface in Figure 2 and click the WiFi icon in the upper right corner.

3、然后紧接着点选一个WiFi连接，然后是输入密码点击加入。

3. Then click a WiFi connection, and then enter the password and click Add.

4、然后我们点击磁盘工具点击继续，点击你的SSD。

4. Then we click Disk Tools to continue and click your SSD.

5、点磁盘工具上的抹掉，然后再次点击弹出的抹掉。

5. Click Erase on the disk tool, and then click Erase again.

6、抹盘了后点击左上角的磁盘工具，点击退出，然后点击重新安装macos。

6. After wiping the disk, click the disk tool in the upper left corner, click Exit, and then click Reinstall Mac OS.

7、然后点击继续，接下来就是漫长的等待，安装完了会进入到桌面上的。

7. Then click Continue, and then there is a long wait. After installation, you will enter the desktop.

苹果Macbook Air怎么重装系统

How to reinstall Apple's Macbook Air

1、首先在 MacBook Air 关上的情况下，按着 Command 及 R 两个按键不放手，然后同时按下最右上角的开关键一下(记着此时仍然继续按着 Command + R 键)。当进入至此介面后，就可以放开所有按键。

1. First, with the MacBook Air off, press the Command and R keys without letting go, and then press the switch key at the top right corner at the same time (remember to continue pressing the Command+R key at this time). After entering this interface, you can release all keys.

当中有 4 个选项：Restore From Time Machine Backup 是从你过去备份至 Time Machine 的，映像档回einstall Mac OS X 顾名思义就是重新安装 Mac OS X Lion、Get Help Online 则是从线上撷取帮助档了解重装步骤及常见问题、而最后的 Disk Utility 则是管理硬碟之用，包括：分割磁区、将磁碟区格式化等。

There are four options: Restore From Time Machine Backup is the backup from your past to Time Machine. The image file back to einstall Mac OS X, as the name implies, is to reinstall Mac OS X Lion. Get Help Online is to retrieve the help file from the online to understand the reinstallation steps and common problems. The last Disk Utility is used to manage the hard disk, including: partition the partition, format the partition, and so on.

2、在画面右上角，大家可以连接 Wi-Fi，建议大家必须连接，以确保下载及安装过程一切顺利。点按「Get Help Online」就可以看到

2. In the upper right corner of the screen, you can connect to Wi-Fi. It is suggested that you must connect to ensure the **ooth download and installation process. Click "Get Help Online" to see

3、最有趣的是，它其实是一个完整版的 Safari，大家在此已可以上网浏览网页呢!如果点按 Restore From Time Machine Backup，就可以进入此介面。记着此时要将过去用作 Time Machine 备份的外置硬碟与 MacBook Air 接驳，再点按「Continue」。

3. The most interesting thing is that it is actually a complete version of Safari. You can browse the web here! If you click Restore From Time Machine Backup, you can enter this interface. Remember to connect the external hard disk used for Time Machine backup with MacBook Air at this time, and then click "Continue".

4、如果大家已接驳了硬碟，应可在此页看到过去的备份档，只要选取了再点按「Continue」就可以将 MacBook Air 回到 Time Machine，所以不在此再多述此项功能了。

4. If you have connected the hard disk, you should be able to see the backup files in the past on this page. As long as you select and click "Continue", you can return the MacBook Air to Time Machine, so this function will not be described here.

5、有些朋友可能想将 MacBook Air 的 SSD 固态硬碟分割成两个、甚至数个磁碟区，其实大家可以在重装 Mac OS X Lion 前，点按 Disk Utility 进行。进入后可以看到此画面，此时可点按希望分割的磁碟。

5. Some friends may want to split the SSD SSD hard disk of MacBook Air into two or even several partitions. In fact, you can click the Disk Utility before reinstalling Mac OS X Lion. After entering, you can see this screen. At this time, you can click the disk you want to split.

6、点按「Partitions」，再拉动下方左侧白色部分右下角的位置，就可以调节使用 Macintosh HD 的部分。完成后再在右方点按未设定的部分，再建立新磁区就可以了。当然，安装了 Mac OS X Lion 后，大家亦随时可以在「Utilities」中的「Disk Utility」进行这项动作。

6. Click "Partitions", and then pull the lower right corner of the white part on the left below to adjust the part using Macintosh HD. After that, click the unset part on the right, and then create a new magnetic area. Of course, after installing Mac OS X Lion, you can also do this at any time in the Disk Utility in Utilities.

7、点按「Reinstall Mac OS X」，然后会弹出在安装前会先与 Apple 的伺服器取得认证，记得此时一定要接驳互联网，然后点按「Continue」继续。

7. Click "Reinstall Mac OS X", and then it will pop up. Before installation, you will first obtain authentication with Apple's server. Remember to connect to the Internet at this time, and then click "Continue" to continue.

8、然后大家会看到一段 Agreement，点按「Agree」后再点按上方的「Agree」即可。再选择希望将 Mac OS X Lion 安装到哪个磁碟区。

8. Then you will see an agreement. Click "Agreement" and then click "Agreement" above. Then select the partition where you want to install Mac OS X Lion.

9、开始重装了，等等吧!这个下载步骤大约需要 1 小时左右(在 Wi-Fi 连线情况下)。

9. It's time to reload. Wait! This download step takes about 1 hour (under Wi-Fi connection).

10、至此完成大半，系统会重新开始，熟悉的苹果标?又出来了。开始安装 Mac OS X。完成后，系统会再次重新启动，然后大约 10 秒后，就会正式进入 Mac OS X Lion，至此重装完成。

10. So far, the system will restart. The familiar Apple logo? Come out again. Start installing Mac OS X. After completion, the system will restart again, and then about 10 seconds later, it will officially enter Mac OS X Lion, and the reinstallation is complete.

扩展资料：

Extended data:

Macbook Air的实用小技巧：

Practical tips for Macbook Air:

1、检查液晶面板信息并校准显示色彩首先花上一点点时间来检查你的Air笔记本的显示器是否是LG生产的,如果是LG生产的,那么我们就有必要进行显示色彩校准.如果检测出来不是LG的,那就不用进行显示色彩校准.并不是说LG的液晶显示面板不好,而是LG的液晶显示面板的色彩配置文件有点小问题,我们只需要通过以下简单步骤来实现:

1. Check the LCD panel information and calibrate the display color. First, take a little time to check whether the display of your Air notebook is produced by LG. If it is produced by LG, then it is necessary to calibrate the display color. If it is not detected by LG, then it is not necessary to calibrate the display color. It is not that LG's LCD panel is bad, but that LG's LCD panel color configuration file has a **all problem, We only need to do this through the following simple steps:

（1）液晶面板检测：运行“终端”，输入：

(1) LCD panel detection: run "terminal", input:

ioreg -lw0 | grep IODisplayEDID | sed "/[^<]*

ioreg -lw0 | grep IODisplayEDID | sed "/[^<]*

如果终端界面得出的反馈信息里面有"LP"的,那么就是LG的面板，就需要进行颜色校准；

If there is "LP" in the feedback information from the terminal interface, it is the LG panel, and color calibration is required;

（2）打开系统偏好设置，进入显示器设置，选择颜色选项并且点击“校正”，选择“专家模式”进行颜色校准，知道你觉得最为舒服为止。很难用文字或是截图来说明什么才叫最舒服，准许你这么一个原则吧，当调整到合适的时候，屏幕的亮度和对比度会明显增加，以这个为判断依据进行调整就行。如上图所示，上面为校准过的，下面为没有校准过得，看下细节的差别吧。

(2) Open the system preferences, enter the display settings, select the color option and click "Calibrate", select "Expert Mode" to calibrate the color until you feel most comfortable. It is difficult to use words or screenshots to explain what is the most comfortable. Let's allow you to follow this principle. When adjusted to the appropriate level, the brightness and contrast of the screen will increase significantly. Just adjust based on this. As shown in the above figure, the upper part is calibrated, and the lower part is not calibrated. Let's see the difference in details.

2、通过全屏应用程序及自动隐藏Dock工具栏实现最大化的利用屏幕

2. Maximize screen utilization through full-screen application and automatic hiding Dock toolbar

MacBook Air的屏幕是11寸以及13寸的,全屏化应用程序可以让我们获得更好的视觉体验,尤其是对于11寸的用户来说特别实用,点击应用程序窗口的最大化按钮尽心全屏,视觉体验完全不一样.

The screen of MacBook Air is 11-inch and 13-inch. Full-screen application can give us a better visual experience, especially for 11-inch users. Click the maximize button in the application window to focus on full-screen, and the visual experience is completely different

当然,有的时候有某些应用程序并不支持全屏显示,没关系,我们还有候补方案,自动隐藏Dock工具栏,实用快捷键组合"Command+Option+D"就能实现自动隐藏和显示Dock工具栏了.

Of course, sometimes some applications do not support full-screen display. It doesn't matter. We also have an alternate solution. The Dock toolbar can be automatically hidden and displayed by using the shortcut key combination "Command+Option+D"

对于一款小屏幕的Macbook Air来说,以上是一个不错的最大化屏幕利用技巧,能够改善我们的视觉体验.

For a **all screen Macbook Air, the above is a good way to maximize screen utilization skills, which can improve our visual experience

3、增强电池续航时间的2个简单技巧

3. Two simple tips for improving battery life

(1)将屏幕亮度调整到一个合理的亮度水平,在保证能够满足现实需求的情况下,最好不要超过65%的亮度

(1) Adjust the screen brightness to a reasonable brightness level, and it is better not to exceed 65% brightness under the condition that it can meet the actual needs

(2)关闭暂时不用的应用程序,只打开目前需要使用的应用程序在50%或是更地亮度水平下,关闭所有不需要的应用程序,只保留1-2个目前使用的应用程序,可以有效地延长电池续航.

(2) Close the applications that are not used for the time being, open only the applications that are currently needed, close all the applications that are not needed at 50% or higher brightness level, and keep only 1-2 applications that are currently used, which can effectively extend the battery life

4、依靠廉价的外接存储设备存储多媒体文件和备份文件

4. Rely on cheap external storage devices to store multimedia files and backup files

MacBook Air最大的短板可能就是其硬盘空间了,因为采用的是SSD固态硬盘,所以通常我们只会选择价格略微适中的128GB规格配置的SSD固态硬盘,对于很多用户来说可能会不太够用,尤其是要存储音乐、电影等文件的时候，幸运的是我们能够使用外接的廉价存储设备来实现大文件的存储，U盘、SD卡等均能帮助我们轻松扩展存储空间，比起更换大容量的固态硬盘来说更加经济，我们可以把电影、Time Machine备份都存储到这些外接设备上。

The biggest weakness of MacBook Air may be its hard disk space. Because it uses SSD solid state drives, we usually only choose 128GB SSD solid state drives with a slightly moderate price, which may not be enough for many users, especially when it comes to storing music, movies and other files. Fortunately, we can use external cheap storage devices to store large files SD card can help us easily expand the storage space, which is more economical than replacing large-capacity solid-state hard disk. We can store movies and Time Machine backups on these external devices.