Macrium Reflect is widely trusted for creating reliable system images and backups, but users occasionally encounter Error 9 (Backup Failed), which can interrupt backup routines and cause serious concern about data safety. This error typically indicates a problem reading or writing data during the backup process. While the error may appear complex, it is often caused by common issues such as disk corruption, failing storage devices, or interference from security software. Understanding the root causes and applying the correct fixes can restore dependable backup performance quickly.

TL;DR: Macrium Reflect Error 9 usually occurs due to disk errors, bad sectors, failing drives, or antivirus interference. Running disk checks, verifying backup integrity, disabling security software temporarily, and checking hardware health often resolves the issue. Keeping Macrium Reflect updated and ensuring storage devices are healthy can prevent future occurrences. In severe cases, replacing failing hardware may be necessary.

What Is Macrium Reflect Error 9?

Macrium Reflect Error 9 typically appears during a backup or clone operation and is often accompanied by messages such as:

• “Read failed – 23 – Data error (cyclic redundancy check)”
• “Write failed – 9 – The device reported an error”
• “Backup aborted – Unable to read from disk”

This error indicates that Macrium Reflect was unable to successfully read data from the source drive or write data to the destination drive. In most cases, the issue lies with hardware health, disk corruption, or conflicting software.

Common Causes of Error 9

Understanding the underlying cause is critical before applying a fix. The most frequent causes include:

• Bad sectors on the source or destination drive
• Failing or aging hard drive or SSD
• Corrupted file system
• Loose or faulty SATA/USB cables
• Antivirus or security software blocking access
• Outdated Macrium Reflect version

Addressing each possible cause methodically ensures a higher chance of fully resolving the issue.

Fix 1: Run CHKDSK to Repair Disk Errors

One of the most common fixes for Error 9 is running the built-in Windows CHKDSK utility to scan and repair file system corruption and bad sectors.

Steps to run CHKDSK:

1. Press Win + S and type Command Prompt.
2. Right-click and choose Run as administrator.
3. Type: chkdsk C: /f /r /x (Replace C with the affected drive letter).
4. Press Enter and allow the scan to complete.

The /f switch fixes file system errors, while /r locates bad sectors and attempts recovery.

Fix 2: Verify the Integrity of the Backup Location

Sometimes the source disk is not the problem—the destination drive may be faulty or corrupted.

Users should:

• Test the external drive on another computer
• Try a different USB port
• Replace the USB or SATA cable
• Ensure sufficient free space on the backup drive

If Macrium Reflect is backing up to a network drive, verifying network stability is also essential. Drops in connection can interrupt write operations and trigger Error 9.

Fix 3: Temporarily Disable Antivirus Software

Security programs sometimes block Macrium Reflect from accessing drives or system files.

To test this:

• Temporarily disable real-time protection
• Add Macrium Reflect to the antivirus exclusion list
• Run the backup again

If disabling the antivirus resolves the issue, users should configure permanent exclusions rather than leaving protection disabled.

Fix 4: Check SMART Status and Drive Health

A failing hard drive or SSD can frequently cause read/write failures. Checking SMART (Self-Monitoring, Analysis and Reporting Technology) data can reveal early warning signs.

Tools to check drive health include:

• CrystalDiskInfo
• HD Sentinel
• Western Digital Dashboard (for WD drives)
• Seagate SeaTools (for Seagate drives)

Drive Health Tool Comparison

If SMART status indicates Caution or Bad, replacing the drive is strongly recommended.

Fix 5: Update Macrium Reflect

Running an outdated version of Macrium Reflect may cause compatibility issues with newer versions of Windows or storage controllers.

To update:

1. Open Macrium Reflect.
2. Click Other Tasks.
3. Select Check for Updates.
4. Install any available updates.

Keeping backup software current ensures optimal compatibility and improved error handling.

Fix 6: Check System Files with SFC and DISM

System file corruption can also create read failures during the backup process.

Run System File Checker:

1. Open Command Prompt as administrator.
2. Type: sfc /scannow
3. Wait for completion.

If issues persist, run:

DISM /Online /Cleanup-Image /RestoreHealth

These tools repair Windows system image corruption that may interfere with backup operations.

Fix 7: Reduce Backup Load and Compression

In rare cases, overly aggressive compression settings can cause failures on marginal hardware.

Users may:

• Lower compression settings
• Split backup files into smaller sizes
• Run backups without encryption (for testing)

This reduces strain on the disk and CPU during backup creation.

Preventing Macrium Reflect Error 9 in the Future

Prevention focuses on maintaining hardware and software health. Recommended best practices include:

• Perform regular disk health checks
• Keep Windows and Macrium Reflect updated
• Replace hard drives older than 4–5 years
• Store backups on high-quality external drives
• Verify backups after creation

Macrium Reflect offers an automatic verification option that users should enable to detect corruption early.

When to Replace the Drive

If Error 9 persists after running CHKDSK, checking cables, disabling antivirus, and verifying system files, the most likely cause is hardware failure. Warning signs include:

• Clicking or grinding noises
• Frequent freezes or slow performance
• Increasing bad sector counts
• SMART status warnings

At that stage, immediate data backup and drive replacement are strongly recommended.

FAQ

1. What does Macrium Reflect Error 9 mean?

It indicates a read or write failure during the backup process, usually caused by disk errors, bad sectors, or hardware malfunction.

2. Is Error 9 caused by software or hardware?

It can be either, but it is most commonly linked to failing storage devices or corrupted file systems.

3. Can CHKDSK fix Error 9 permanently?

If the issue is minor file system corruption, CHKDSK may resolve it permanently. If the drive is physically failing, the error will return.

4. Should antivirus software be disabled permanently?

No. It should only be disabled temporarily for testing. If confirmed as the cause, add Macrium Reflect as an exclusion.

5. How do users know if their drive is failing?

SMART monitoring tools, unusual noises, slow performance, and increasing bad sectors all indicate failure.

6. Can an SSD cause Error 9?

Yes. Although SSDs lack moving parts, they can fail due to worn-out memory cells or controller issues.

7. Does updating Macrium Reflect help?

Yes. Updates often include bug fixes and improved compatibility with Windows and storage hardware.

8. Is it safe to ignore Error 9?

No. Ignoring it can result in incomplete backups and potential data loss.

9. How often should disk health be checked?

At least once every few months, or more frequently for older drives.

10. What is the fastest solution if the error keeps returning?

If troubleshooting fails, replacing the suspected failing drive is the most reliable long-term solution.

By systematically diagnosing disk health, software conflicts, and system integrity, users can eliminate Macrium Reflect Error 9 and restore dependable backup protection. Regular maintenance and proactive hardware monitoring are the most effective defenses against future backup interruptions.