Mac Prohibitory Symbol on Startup Screen Mac?[4 Fixes]

Please provide the content you want to translate into English, and I will do my best to help you translate it.

Introduction: Seeing the Mac prohibitory symbol on startup?

Do you see a red circle with a slash through it and a question mark when you start up your Mac? This is the universal symbol for "no," and means that the system can't access an important file on the disk, preventing you from booting up. It's one of the most common startup issues on a Mac.

Are you wondering what the Mac prohibitory symbol is? When your system fails to find a bootable macOS installation, a circle with a line through it appears on your Mac. This error can occur due to several reasons. Fortunately, there are also multiple solutions to choose from.

This article will discuss the Mac prohibitory symbol and how to resolve startup issues with various solutions.

What Causes the "No Entry Sign" Error on Mac?

The "Mac Forbidden Symbol" error can occur due to several reasons. Let's explore them -

• File System Corruption: One of the main reasons behind the appearance of the prohibitory symbol on your Mac is corrupted system files. These must be deleted immediately as they can harm your system in the future.
• MacBook Startup Issues: Another reason for this problem could be errors related to system startup. Other errors might also trigger this specific issue.
• Incomplete macOS Update: If your latest update was interrupted, it might lead to this problem. In such a case, you need to update your macOS.
• External Drive Malfunctioning: Have you checked your external disk? Sometimes, an external drive can malfunction, leading to this error.

Please provide the English content you want translated, and I'll translate it into Chinese for you as soon as possible.

3 Valid Fixes for Mac External Hard Drive Read-Only Error

This article discusses 5 free and easy ways to recover deleted files from a Mac computer before or after emptying the Trash. Read More >>

Solution: How to Fix the "Circle with a Line Through It" Issue on Mac

Are you dealing with the “Mac prohibitory sign” error? We understand that seeing a slashed Apple logo can be worrying. But there are several solutions to try. Check these out:

• 00:29 - Disk Utility - Recovery Mode
• 00:41 - iFixit's KEXT article
• 01:31 - Booting from a macOS installer USB drive
• 03:36 - Moving the KEXT file
• 04:50 - Restarting

Method 1: Reinstall macOS

The simplest solution is to erase your existing macOS and reinstall. You can do this by reinstalling macOS from Recovery Mode.

Here are the steps that would need to be followed:

Step 1: Restart your device.

Step 2: Hold down the Command and R keys.

Step 3: Release the buttons when you see the Apple logo.

Step 4. Click the “Options” icon to open the Utilities window.

Step 4: In the Utilities window, choose Reinstall macOS.

Step 5: Follow the on-screen instructions.

Of course, I can help you translate English into Chinese. Please tell me what needs to be translated.

Reinstalling macOS in Recovery Mode: Will It Erase Everything on Mac?

macOS Recovery mode allows you to easily reinstall the Mac operating system on your internal or external drive. Read More>>

Method 2: Repair Your Mac with Disk Utility

Another effective way to fix the forbidden sign on Mac is by using Disk Utility. Wondering how? Don't worry; we'll explain it to you.

The Disk Utility app's First Aid feature can scan your system and identify problems, and, if possible, repair them.

To run First Aid, follow these steps:

Step 1: Restart your MacBook and hold down the Command + R keys to enter Recovery Mode.

Step 2: Choose “Utilities” and then click “Disk Utility.”

Step 3: Click on “View” in the top-left corner.

Step 4: Click “Show all devices.”

Step 5: You'll see a list of disks and volumes.

Step 6: Select the disk you want to scan.

Step 7: Click “First Aid.”

Step 8: Click the “Run” button.

Step 9: Wait for the process to complete.

Method 4: Reset the SMC and NVRAM/PRAM

You may also be able to fix the Mac freeze issue by resetting the SMC and NVRAM. However, the steps differ depending on your model.

To reset the SMC on a Mac with a T2 security chip, follow these steps:

Step one: Power down the system.

Step 2: Press and hold the Power button.

Third, restart.

That should reset the SMC. If that doesn't work, you'll need to press and hold the right Shift, left Control, and left Option keys while pressing and holding the power button. Wait a moment, release all the keys, and then restart your system.

If you have an M2 or M1 Mac, you don't need to worry about resetting the SMC, as these models don't have an SMC. As for NVRAM or PRAM, it typically doesn't need to be reset manually, as it automatically resets when your Mac restarts.

For older systems, you need to reset the NVRAM/PRAM by following these steps:

Step one: Power down the system.

Step 2: Press the Power button.

Step Three: Hold down the Option, Command, R, and P keys all at once.

Step 4: When you hear the startup sound for the second time, let go of the keys.

Method 5: Replace a Damaged Mac Hard Drive

Lastly, you could replace a damaged hard drive in the system. Buy an appropriate replacement and ensure that it's compatible with your system. Then, transfer all of your data to the new drive to see if that resolves the issue.

Additional Tip: How to Recover Data When Your Mac Won't Start Up

Many users report issues with booting up the operating system. Resolving this can take time, and concerns about losing crucial data aren't unfounded. In such instances, opting for a professional data recovery tool is essential. For this purpose, you can explore options for a Mac Data Recovery Wizard software.

Mac Data Recovery Wizard is a powerful data recovery software that effortlessly helps you restore lost data. Whether your data has been lost due to system crashes, malware attacks, accidental deletion, or any other reason, you can easily retrieve it with this tool. Its user-friendly interface also makes it particularly suitable for beginners.

Highlight:

• User-friendly interface
• Recover audio, video, images, and more
• Quick scan mode to locate and restore files from Mac Trash
• Remote IT support

Do you want to use Mac Data Recovery Wizard tool? For that, follow the steps mentioned below:

Step 1: Search for the Lost Files

Select the disk location where you lost your files (it can be an internal HDD/SSD or a removable storage device). It works on macOS Sierra, High Sierra, Mojave, Catalina, Big Sur, Monterey, Ventura, and the latest Sonoma. Click the “Find Lost Files” button.

Note: Before you proceed with data recovery, it's recommended that you click “Disk Backup” from the left sidebar and create a backup of your Mac to prevent further data loss. After the backup, the software can recover data from the Mac backup, and your computer will be able to write new data again.

Step 2: Review the scan results

The Mac Data Recovery Wizard immediately scans the disk volume you select and displays the scan results.

Step 3: Select the files to be recovered

From the scan results, select the files you want to preview and then click the “Recover” button to get them back.

Last Words

Do you see a prohibitory sign when starting up? If this happens repeatedly, your system is facing some startup-related errors. It's crucial to address this issue immediately, or you'll be denied access to your Mac.

When dealing with such an issue, you might be at risk of losing your data. Opting for efficient data recovery software is an excellent way to get your data back. Data Recovery Wizard for Mac is a reliable and user-friendly tool that can easily assist you in retrieving your lost data.

Try the Data Recovery Wizard for Mac now!

Frequently Asked Questions About the Mac Prohibited Symbol

Are you eager to learn more about the Mac prohibition symbol? If so, read through the questions and answers listed below:

1. What does the circular icon with a coil on my Mac mean?

This slashed circle, the Mac's "no" sign, means that the system can't access an important file on the disk, and is preventing you from booting up.

2. How to Fix a Mac That Won't Boot from USB?

There are several solutions to fix the issue of a Mac not booting from USB. For instance, you must create a bootable USB drive correctly. You can also enable your system to start up from an external hard drive.

How do I start Internet Recovery on a Mac?

To start your Mac in Internet Recovery, restart it. Then, hold down the Option, Command, and R keys. If you see a padlock, enter your password.

4. What if my Mac won't start up after an update?

If your Mac won't start up after an update, don't panic! There are several remedies to try, such as force-restarting the system, using Recovery Mode, or resetting the NVRAM.