Software⏱️ 4 min read📅 2026-06-15

How to Fix: RAID 1 Mirror Error with Two Western Digital 500GB Drives

Windows RAID 1 error fix for Western Digital drives.

Quick Answer: Try using the built-in Disk Management tool to reconfigure the drives and create a new mirror.

📋 Table of Contents

  1. 💡 Why You Are Getting This Error
  2. 🚀 How to Resolve This Issue
  3. ✨ Wrapping Up

RAID 1 Mirror Error with Two Western Digital 500GB Drives

This error affects users who have installed Windows 7 Ultimate 64-bit on a single Western Digital 500GB drive and want to set up RAID 1 mirroring with another unallocated Western Digital 500GB drive. The error message indicates that the sector sizes of the two drives do not match, which can cause data corruption and system instability. Resolving this issue requires careful attention to detail and the correct steps to ensure compatibility between the two drives.

💡 Why You Are Getting This Error

  • The primary reason for this error is that Western Digital 500GB drives have different sector sizes. The WD5000BEVT-22ZAT0 drive has a sector size of 512 bytes, while the WD5000BPVT-22HXZT1 drive has a sector size of 4096 bytes. This incompatibility can cause errors during RAID 1 mirroring.
  • Another possible reason for this error is that the drives are not properly detected by Windows. In some cases, the operating system may not recognize the drives as identical, leading to incorrect sector size detection.

🚀 How to Resolve This Issue

Fixing Sector Size Incompatibility

  1. Step 1: Step 1: Check the drive properties
  2. Step 2: Open Disk Management and select the unallocated Western Digital 500GB drive. Right-click on the drive and select 'Properties.' On the Properties window, click on the 'Advanced' tab and then click on the 'Details' button. Note down the sector size of the drive.
  3. Step 3: Step 2: Verify sector sizes
  4. Step 4: Compare the sector size of the first Western Digital 500GB drive (512 bytes) with the sector size of the second drive (4096 bytes). If they do not match, proceed to the next step.
  5. Step 5: Step 3: Convert sector size (if necessary)
  6. Step 6: If the sector sizes are different, you may need to convert the sector size of one or both drives. To do this, download and install the Western Digital Sector Size Converter tool from the manufacturer's website. Follow the instructions provided by the tool to convert the sector size.

Fixing Drive Detection Issues

  1. Step 1: Step 1: Update Windows drivers
  2. Step 2: Open Device Manager and expand the 'Disk drives' section. Right-click on each Western Digital drive and select 'Update driver.' Follow the prompts to update the drivers.
  3. Step 3: Step 2: Run a disk check
  4. Step 4: Open Command Prompt as an administrator and run the command `chkdsk C:` (assuming the unallocated drive is lettered 'C'). This will scan the drive for errors and fix any issues found.

✨ Wrapping Up

Resolving the RAID 1 Mirror Error with Two Western Digital 500GB Drives requires attention to detail and the correct steps. By following the above guide, you should be able to identify and resolve the root cause of the error and successfully set up RAID 1 mirroring between the two drives.

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