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List of contents of this article:

• 1,How to reinstall the system for Mac computer
• 2、 How to reinstall the system on Mac?
• 3, How to reinstall the system on Mac?

How to reinstall the system on a Mac computer

1. Backup data: First of all, 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. 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. Insert the boot disk into the USB interface of the computer, download the win7 system, and put it into the made USB boot disk.

4. You need to configure a wireless mouse and keyboard. Macbook doesn't matter, so at the beginning, you need to prepare another mouse with a USB interface to use here, and then choose your Bluetooth mouse and keyboard according to the prompts. Well, my computer is going to be sold. That's the end of the sharing.

5. If your Mac computer doesn't have an Apple keyDisk, you can try the following methods to reinstall the Mac system: Use an ordinary keyboard: If you have an ordinary USB or Bluetooth keyboard, you can try to connect it to a Mac computer, then hold down the Option key (or Alt key) and start the computer.

6. Prepare for installation: First of all, you need to download the latest version of the Mac operating system installation file from Apple's official website. Make sure that your Mac computer meets the minimum system requirements of the new system and back up all important data to avoid loss during installation.

How to reinstall the system on Mac?

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.

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.

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.

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, and the format select "MaC OS Extended (Journaled)" or "Mac OS Extended (Journaled)" in English and then select Erase.

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.

Restart your Mac and press keyboard option + command + R in the phone interface. Select Disk Utility in the jump interface and erase the records on the disk. Then select the option to reinstall macOS. Select the consent option in the jump interface.After that, enter the reinstall system interface and wait for a period of time.

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.