To boot your Mac with an Apple processor and access the startup options, follow these steps:
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If your Mac is already on, select Restart from the Apple menu or press the power button to turn it off and then back on.
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When you hear the startup sound, press and hold the Option key until the Startup Manager appears. This window will display various boot options, including macOS Recovery, booting from a different disk, starting in safe mode, and more.
To unlock an external Mac disk, follow these steps:
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Right-click on the external hard drive on your Mac computer and select Get Info.
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Choose the Sharing & Permissions section and click on the Authentication button.
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Select Ignore ownership on this volume.
To start a frozen iMac, follow these steps:
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Press and hold the power button for at least 10 seconds to turn off the Mac.
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Wait for a few seconds, then press the power button again to start the Mac.
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If the problem persists, continue holding the power button until the computer shuts down.
To restart a frozen computer, follow these steps:
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Press and hold the power button of your Mac computer until it shuts down.
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After a while, press the power button again to start the Mac.
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Please note that any unsaved changes in open documents may be lost.
To boot Mac from a USB drive, follow these steps:
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Press and hold the Option (Alt) key on the keyboard when starting the computer.
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Select the USB drive as the startup disk when the option appears.
To access the BIOS on a Mac computer running Mac OS X, use the following key combinations:
- X: Does not work with Mac G5.
- C: Boot from a CD.
- N: Boot from a FireWire installation disk.
- D, Alt, or Cmd with other key combinations such as V, S, or P.
To unlock a locked hard disk, follow these steps:
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Start the computer with a USB drive or DVD.
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Click Next.
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Repair your computer, select Advanced startup options, choose Troubleshoot, select Advanced options, and then select Command Prompt.
If your Mac computer is unresponsive, try using the combination of Ctrl + Command + Power button. This combination will initiate the procedure to close all open applications and shut down the system.
To create a bootable USB drive using Rufus, follow these steps:
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Open the Rufus program by double-clicking on it.
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In the Device section, select the USB drive.
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Choose the ISO image option in the Create a bootable disk using section.
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Click on the CD-ROM icon on the right and select the ISO file.
Remember to save your changes and properly eject the USB drive before using it as a bootable device.