SSD from 2015 MacBook Pro not detected after connecting to other computers externally

Recovering Data from a 2015 MacBook Pro SSD: Potential Solutions and Next Steps

Introduction

When your MacBook Pro from 2015 suddenly refuses to boot and displays a black screen or a white folder with a question mark, it often indicates a problem with the internal disk. If you’ve attempted to remove the SSD and connect it externally only to find it undetectable on multiple computers, it can be a distressing experience. This article explores various troubleshooting steps, potential reasons for detection failure, and strategies for data recovery.

Understanding the Issue

The symptoms—black screen on startup, occasional white folder icon with a question mark—suggest that the system cannot locate a valid startup disk. Physically removing the SSD and connecting it externally is a common troubleshooting approach. However, if the drive remains invisible on both Mac and Windows systems, several factors might be at play:

• Drive failure or corruption
• Connection or enclosure issues
• Compatibility problems
• File system damage

Troubleshooting Steps

1. Verify External Enclosure Compatibility

Ensure the external enclosure supports the SSD’s specifications, including interface (likely PCIe or SATA) and size (2.5-inch). Sometimes, incompatibility can prevent detection.

1. Test with Multiple Computers and Cables

Attempt connecting the SSD to different computers. Use different USB or Thunderbolt cables to rule out connection issues.

1. Use Disk Utility or Disk Management

On Mac:
– Launch Disk Utility (Applications > Utilities > Disk Utility)
– Check if the drive appears in the list
– If detected but unmounted, attempt to mount or run First Aid to repair

On Windows:
– Open Disk Management (Right-click Start > Disk Management)
– See if the drive appears
– If visible but unrecognized, consider formatting only as a last resort to recover data

1. Utilize Data Recovery Software

If the drive is detected but inaccessible, specialized data recovery tools such as Disk Drill, EaseUS Data Recovery Wizard, or Stellar Data Recovery can scan the drive for retrievable files. These tools often work even when the drive’s file system is damaged.

1. Consider Professional Data Recovery Services

If software solutions fail, professional data recovery specialists have advanced techniques for retrieving data from failed or damaged SSDs. While costly, they offer the highest chance of recovering valuable files.

1. Assess Drive Health

Using SMART monitoring tools (like DriveDx or SMART Utility) can provide insight into the physical health of the SSD.

Next Steps and Recommendations