- macOS High Sierra
Problem
- Update my Mac OS (High Sierra) recently, no symptom after the OS update
- Restart my Macbook recently, encounter Macbook unable to boot up issue
- "No Entry" sign always show after the Apple logo
- The system will reboot and it will keep repeating couple of times and remain shut down afterwards
Steps
- Make sure your Mac machine is shutting down.
- Press "Command" + "R" key
- Press the "Power" button to start the Mac machine
- "Mac OS X Utilities" window will be displayed
- Select "Reinstall Mac OS X" option, click on "Continue" button
- Follow the steps in the wizard, you will get the your Mac machine start up to work like a charm.
Note: Reinstall Mac OS X will not cause data lost.
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