Recovering Data from a Corrupted File System with TestDisk

After an unexpected OS crash, I connected the affected drive to another machine via USB. Windows prompted me to format the drive, reporting that the file system was missing or corrupted.

Formatting would have destroyed the data. Instead, I used **TestDisk**, a free, open-source partition recovery tool, to restore access to the drive without data loss.

Recovery Process

1. **Download TestDisk** from cgsecurity.org

2. **Run as administrator** to ensure full disk access

3. **Select the affected drive** from the list of detected devices

4. **Choose the partition table type** (typically Intel/PC for Windows systems)

5. **Run the Analysis** - TestDisk scans the drive for existing and lost partitions

6. **Quick Search** - locates most recoverable partitions

7. **Deeper Search** (if needed) - performs a more thorough scan when Quick Search is insufficient

8. **Write the partition structure** - once the correct partitions are identified, commit the changes

9. **Reboot** - the drive should now be accessible with data intact

Critical Guidelines

**Do not format** the drive when prompted by Windows

**Do not write** any new data to the corrupted drive, as this can overwrite recoverable sectors

TestDisk supports NTFS, FAT, ext2/ext3/ext4, and many other file systems

For recovering individual files rather than partitions, use **PhotoRec**, which is bundled with TestDisk

This tool recovered all of my data. It is an essential utility for anyone working with storage and data recovery.