BitLocker Volume Recovered After Accidental Repartitioning

Initial symptoms

The user had recreated partitions on a disk that previously contained a BitLocker-encrypted NTFS volume. Windows no longer presented the original encrypted partition.

Technical diagnosis

Sector-level examination showed that the new partition layout began slightly before the original BitLocker NTFS structures. Important encrypted-volume metadata remained present beyond the newly written sectors.

Recovery challenge

The task was not to decrypt data without authorization. The customer supplied the correct password. The challenge was to identify and reconstruct the surviving original encrypted volume without writing to the source disk.

Recovery process

1. The disk was preserved and examined read-only.
2. The original encrypted partition boundary was identified.
3. The surviving BitLocker volume was reconstructed virtually.
4. The supplied password authenticated the volume.
5. Representative files were opened and verified before full extraction.

Outcome

The original file system became accessible and the customer’s data was recovered. The case demonstrates why users should stop immediately after accidental formatting: the old volume may still exist until later operations overwrite it.