How Did Stellar Recover Data from an SSD with Bad Blocks and File System Corruption?

Summary: In September, a housing infrastructure company lost access to its office data when its system stopped detecting a 512 GB AARVEX SATA SSD. Stellar Hyderabad diagnosed extensive bad blocks, severe media degradation, and a damaged NTFS file system. The recovery team cloned the SSD block by block, performed all operations on the clone, and rebuilt the files using data carving. After verification, the company received its Word documents, Excel sheets, PDF files, project and program files, photographs, and videos on an encrypted hard drive.

Data can still be recovered from an SSD that the system no longer detects, even when the drive has many bad blocks and a corrupted file system. The key is to avoid reading the failing drive directly and to carry out all recovery work on a clone.

This became clear in a recent case handled by Stellar Data Recovery Hyderabad. A company had no backup when its SSD stopped appearing in the system, and administrative work and ongoing projects came to a standstill. The staff had no practical way to continue. This SSD data recovery case study explains how the Stellar Hyderabad Engineering and Innovation team recovered important business data from an undetected SSD with severe bad blocks and NTFS file system corruption.

Case Overview

• Media Type: SSD
• Brand: AARVEX
• Drive Capacity: 512 GB
• Interface: SATA
• Issue: Bad Blocks and File System Corruption
• Data at Risk: Word, Excel, PDF, Project and Program Files, Photographs, and Videos 

The Challenge

An unstable drive, a damaged file system, and no backup ruled out standard recovery methods. The main challenges are listed below.

The Data Recovery Approach by Stellar Hyderabad

Stellar follows a tailored data recovery approach based on the nature and complexity of each case. This Stellar SSD data recovery case involved assessing severe media degradation, cloning the unstable SSD, analysing NTFS file system corruption, and reconstructing the recoverable files. The process followed five stages.

1. Media Analysis

The Engineering and Innovation team performed a routine media inspection to assess the physical health and determine why it wasn’t detected. The inspection found extensive bad blocks, serious media degradation, and damage to the file system structures. The drive was too unstable to read directly, which ruled out standard file copying and software-based recovery.

2. Disk Cloning

The team cloned the SSD block by block onto a healthy drive using specialised equipment designed for unstable media. The objective was to read as much data as possible without further damaging the source drive. Because of the large number of bad blocks, the cloning took a couple of days. The original SSD was not used again, and all recovery work was done on the clone.

3. Cloned Image Analysis

The analysis showed heavy damage to the file system metadata, including the master file table (MFT), which the operating system uses to locate files and folders. Bad blocks on the source drive corrupted the MFT, which left the operating system unable to rebuild the original folder structure through normal means. 

4. Data Carving and File Reconstruction

With the NTFS file system damaged, the team carved the data manually using proprietary tools. The main steps are listed below.

• The team identified file signatures and data patterns in the raw data and extracted the recoverable content.
• Engineers reassembled files that had fragmented into multiple blocks.
• The team sorted the recovered files by type, including documents, photographs, videos, and program files.
• The team restored original folder structures and file names for every file with enough surviving metadata. 

5. Integrity Verification

Every recovered file was checked before delivery. The main checks are listed below.

• Experts opened the files in their supported formats to confirm that they were accessible and working.
• File sizes and structural consistency were verified for each file type.
• Incomplete or partly damaged files were identified and separated from the usable ones.
• Folder structures and file names were reviewed to confirm that they matched the recovered content.

Why Cloning First Made the Difference in This SSD Recovery

The order of recovery steps matters as much as the tools. An SSD with many bad blocks is fragile, and every read attempt on the original drive puts the remaining data at risk. Repeated connections, running recovery software directly on the drive, or a vendor working on the original media can all reduce the amount of data that can be recovered.

Stellar Hyderabad experts avoided this risk by cloning the drive first and carrying out every later step on the copy. Cloning took a couple of days, but it protected the original media from further strain. File reconstruction from raw data after the NTFS failure and the integrity checks before handover were then completed on the clone, which left the failing SSD untouched. 

Behind every undetected SSD are years of work, project files, and memories waiting for a second chance. Stop using the drive immediately and leave the rest to the experts at Stellar Data Recovery. Call 1800 102 3232 to arrange a professional consultation.

SSD data loss can occur due to different issues, from file system corruption to accidental deletion. Watch this real customer testimonial to see how Stellar Data Recovery recovered 10 years of files from an M.2 SSD after they were deleted using “Shift+Delete.”

FAQs

1. What Is the Speed of a SATA SSD?

A SATA SSD usually reads and writes at about 500-550 MB/s, close to the SATA III interface ceiling.

2. What Is the Difference Between a SATA SSD and an NVMe SSD?

SATA and NVMe SSDs store data on the same flash memory. The difference is the connection. SATA uses the older hard-drive interface, which caps its speed. NVMe plugs into the PCIe lanes a graphics card uses and gets far more room to move data. Nearly every other difference follows from that choice.

3. Does a SATA SSD Need a Special Driver?

A SATA SSD does not need a special driver. Windows, macOS, and Linux include standard storage drivers, and the system detects the drive as soon as it is connected. A problem can still occur if the BIOS sets the SATA controller to IDE or RAID mode instead of AHCI, which may slow the drive or prevent it from appearing properly. If a new SSD shows in the BIOS but not in File Explorer, the drive usually needs to be initialised and formatted in Disk Management. 

4. What Are Bad Blocks in an SSD?

Bad blocks are areas of an SSD’s flash memory that can no longer be read or written reliably. They may result from manufacturing defects or develop as flash cells wear out over time. Once the spare capacity that replaces them runs out, files become unreadable, and the system may stop detecting the drive.

5. Why Does a System Stop Detecting an SSD?

A system usually stops detecting an SSD because of bad blocks, a damaged file system, controller or firmware failure, or a faulty SATA cable or port. If the drive still does not appear after the cable and port are checked, stop using it and contact a professional data recovery service provider. Repeated connection attempts can reduce the amount of data left to recover.

6. Can Data Be Recovered from an SSD with Bad Blocks and File System Corruption?

Yes, data may be recoverable from an SSD with bad blocks and file system corruption, depending on the extent of the damage. Professional SSD data recovery may involve specialised drive cloning, file system analysis, and data carving. If the SSD is unstable or no longer detected, stop using it and consult a professional data recovery team.