Mac boot disk from other hard drive?

php editor Xinyi introduces you how to use Mac to boot from other hard drives. In some cases, you may need to boot your Mac from another hard drive, such as when there is a problem with the primary hard drive or system maintenance is required. Fortunately, Mac provides built-in functionality to achieve this goal. By following some simple steps, you can easily boot your Mac from another hard drive and continue using your device. Next, we will explain to you in detail how to do this.

How to set MAC (i.e. Apple series computers) to boot from the external hard drive by default

When booting, press and hold the C key to boot from a bootable CD or DVD disc, such as Mac OS X installation CD. Holding down the D key will select the inserted installation DVD 1 at startup, thus starting the Apple Hardware Test (AHT). These operations can help users easily perform system diagnosis and installation.

First, click the [Apple] icon in the upper left corner as shown in the picture below. Then, in the pop-up menu bar, select the [System Preferences] option, as shown in the figure below. Then, in the pop-up window, click the [Startup Disk] icon, as shown in the figure below.

Turn on the computer and hold down the Option key to enter the system selection interface. Select the Windows system, hold down the Control key, and confirm the setting as the default boot system.

After turning on the computer, press and hold the "Option" key to enter the system selection interface. To set the Windows system in the external hard drive as the default startup item, use the left and right keys to select the external removable disk and hold down the "Control" key.

In Mac systems, how to set the startup CD as the preferred startup device

1. First, as shown in the figure below, click the [Apple] icon in the upper left corner. Then, in the pop-up menu bar, select the [System Preferences] option, as shown in the figure below. Then, in the pop-up window, click the [Startup Disk] icon, as shown in the figure below.

2. Press and hold F12 when turning on the computer. The CD option will automatically pop up during startup. Click "My Computer" or "File" and then select the optical drive to eject the disc. For MacBook, it is impossible to boot from the CD through BIOS settings. You can try holding down the power button and pressing the C key at the same time to boot the disc.

Hold down the C key during startup to boot from a bootable CD or DVD, such as a Mac OS X installation CD. And holding down the D key launches Apple Hardware Test (AHT) when the installation DVD 1 is inserted.

First, in the Apple system, click the Apple icon in the upper left corner, select "System Preferences", and then press the Enter key. Next, find the "Boot Disk" option and click to enter, as shown in the figure below. In the interface that opens, you can see two different systems in the upper left corner.

The steps are as follows: Put the MacOSX system installation CD into the computer; start or restart the computer, hold down the C or Option key to enter the startup item selection interface; select the CD option, which is the MacOSX CD icon, to boot from the CD.

mac starts from the second hard drive

Operation computer: MacBook Operating system: OSX9 Solution to the system failing to start after replacing the hard drive: After the system replaces the hard drive, the system freezes when booting to the win interface, or Restart, there may be a boot problem. First prepare the boot disk. When the system starts, select the USB disk to start. Enter the PE interface.

First, click the [Apple] icon in the upper left corner as shown in the picture below. Then, in the pop-up menu bar, select the [System Preferences] option, as shown in the figure below. Then, in the pop-up window, click the [Startup Disk] icon, as shown in the figure below.

Before proceeding with the second step, please find a hard drive holder or hard drive case, put the SSD in it, and use it as a mobile hard drive. This way you can restore the contents of the disk in your Mac to the SSD via USB.

What should I do if the system cannot start after changing the hard disk on my mac?

Reinstall the system: If there is no problem with the hard disk connection, you can try to reinstall the system. You need to use another Mac computer to make a startup disk, then insert the startup disk into the a1278 computer, hold down the Option key to boot, select to boot from the startup disk and reinstall the system.

In some cases, you can erase the disk (or the volume on this disk) at any time, for example: ① You want to quickly and permanently erase everything on your Mac and restore your Mac to Factory settings, such as when your Mac is sold or given away.

When restarting your Mac, press Command+R or Command+Option+R to enter the OSX utility. If it doesn't work, turn off the computer and hold Command+Option+R, then turn the computer on until the Earth appears on the screen.

Shut down, unplug the power cord, and remove the battery; press and hold the power button for 5 seconds without releasing it, reinstall the battery; plug in the power cord, and turn on the phone to return to normal.

Open "Disk Utility". What to do if the mac system cannot be entered: First, it is recommended to reinstall the system and reinstall macOS; in the menu bar, select "Restart" from the Apple menu. When your Mac restarts, hold down the Command and R keys until the macOS Utilities window appears. Select Disk Utility, then click Continue.

Hello, after replacing the hard drive of the computer, there is no system in the hard drive. You need to reinstall the system before it can be used normally.

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