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List of contents of this article:

• 1, How to reinstall the system on Mac?
• 2, How to reinstall the mac computer system?
• 3, Apple notebook reinstall system (step-by-step tutorial)
• 4, How to reinstall the system on Mac?
• 5 、 How to reinstall the system on a Mac computer?

How to reinstall the system on Mac?

Erase the hard disk and select your main hard disk. It should be explained here that it is your system disk. Generally, it is to limit the "built-in" hard disk. The format is "Mac OS Extended (Journal)" or "Mac OS Extended (Journ" in English Aled)" and then select to erase.

Method 1: Use the command line First, you need to use a boot disk or USB flash drive to start the Mac computer. Once you enter the boot mode, open the terminal. Enter the following command in the terminal and press "Enter": date 051200002018 This command will set the date and time so that it is 00:00 on May 12, 2018.

The details are as follows: First, the first step is to click the [Apple] icon in the upper left corner according to the arrow in the figure below, and then click the [Shut Down] option in the pop-up menu bar.

The key meaning of Apple Computer Reinstall System refers to pressing a specific combination key when starting or restarting the computer to enter the system recovery mode or start the disk utility.

Use bootcaMp: If you need to reinstall the MAC system on the existing Windows or Linux system, you can use Bootcamp Assistant to dock your Windows or Linux system with the MAC system. USE AN EXTERNAL HARD DISK OR USB FLASH DRIVE: YOU CAN PLUG YOUR HARD DISK OR USB FLASH DRIVE INTO THE USB PORT AND THEN REINSTALL THE MAC SYSTEM.

Click logo on the computer that needs to install Mac. Then select Shutdown on the menu. After shutting down, insert this made boot disk into the computer USB. Then press and hold the option and then press the power button to turn on the computer.

How to reinstall the Mac computer system?

Reinstalling the system on a Mac computer can be done through the following steps: Backup data: First, before reinstalling the system, please make sure that your important data has been backed up. This can prevent data loss.

The details are as follows: First, the first step is to click the [Apple] icon in the upper left corner according to the arrow in the figure below, and then click the [Shut Down] option in the pop-up menu bar.

First, turn on the power switch of the Mac and hold down the command+R key to enter the recovery mode, and we can see the MacOSX utility. Select Disk Utility - then select the option above, which is generally MacintoshHD, and select Erase on the right. It means to delete all the content and reinstall the new system.

Method 1: Use the command line First, you need to use a boot disk or USB flash drive to start the Mac computer.Once you enter the boot mode, open the terminal. Enter the following command in the terminal and press "Enter": date 051200002018 This command will set the date and time so that it is 00:00 on May 12, 2018.

The method is as follows: The first step: First, when the MacBook Air is turned off, press the Command and R keys without letting go, and then press the open key in the upper right corner at the same time (remember to continue to press Command + at this time R key).

Apple notebook reinstall system (step-by-step tutorial)

1. Backup data: First, before reinstalling the system, please make sure that your important data has been backed up.This can prevent data loss. Connect to the Internet: Make sure that your Mac computer is connected to a reliable Internet connection, because you need to download and install the system.

2. The first diagram will be displayed again, select the second "Reinstall macOS" and then click Continue. After selecting, you will be prompted "To set up and install macOS Sierra, please click Continue". The system may be different, but the steps are the same. Just click to continue.

3. Before reinstalling the system, we first need to back up important data to avoid loss during the reinstallation process. Apple notebooks provide a variety of backup methods, including using iCloud Drive, external hard disk or TimeMachine. Choose a backup method that suits you and make sure that all important data has been backed up.

4. There are two main ways to reinstall the Mac system, one is to restore the initial system online, and the other is to reinstall it using a USB flash drive. Next, I will share with you the method of reinstalling the Mac system.

5. After restarting the Mac, press the keyboard option + command + R until the countdown appears on the monitor and wait for the next step.

6. The following is an introduction to several tutorial methods for reinstalling the system of Apple notebook macbook air. The lion system is not damaged, and the installation method is when the system is gone.

How to reinstall the system on Mac?

1. Backup data: First of all, please make sure that your important data has been backed up before reinstalling the system.This can prevent data loss. Connect to the Internet: Make sure that your Mac computer is connected to a reliable Internet connection, because you need to download and install the system.

2. Use an external hard disk or USB flash drive: You can plug your hard disk or USB flash drive into the USB port and then reinstall the MAC system. During the installation process, you need to select a USB flash drive or hard disk as the boot device. IT SHOULD BE NOTED THAT REINSTALTING THE MAC SYSTEM MAY CAUSE YOUR DATA LOSS, SO BE SURE TO BACK UP YOUR DATA BEFORE OPERATING.

3. Method 1: Use the command line. First, you need to use a boot disk or USB flash drive to start the Mac computer. Once you enter the boot mode, open the terminal. Enter the following command in the terminal and press "Enter": date051200002018 This command will set the date and time so that it is May 12, 2018, 00:00.

How to reinstall the system on a Mac computer?

1. Backup data: First of all, please make sure that your important data has been backed up before reinstalling the system. This can prevent data loss. Connect to the Internet: Make sure that your Mac computer is connected to a reliable Internet connection, because you need to download and install the system.

2. Use a USB keyboard: You can reinstall the Mac system by connecting a USB keyboard. Please make sure that the USB keyboard you are using is compatible with Mac computers, and you need to use the keyboard to operate during the system installation process.

3. The details are as follows: First of all, according to the arrow in the figure below, click the [Apple] icon in the upper left corner, and then click the [Shut Down] option in the pop-up menu bar.

4. To reinstall the Windows system in the Apple notebook, you can refer to the following operation method: insert the boot disk into the USB interface of the computer, download the win7 system, and put it into the made USB boot disk.

5. Nowadays, more and more people are using Mac computers. Some users encounter problems that cannot be restored and do not know how to reinstall the system. Next, I will introduce the specific operation steps to you.