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Global Accelerated Learning • Est. 1999
Glossary Term Unallocated Space

Training Camp • Cybersecurity Glossary

What is Unallocated Space?

Unallocated space is disk area not assigned to active files that often retains deleted data, a key forensic source recoverable through file carving.

Glossary > Incident Response & Forensics > Unallocated Space

Understanding Unallocated Space

Unallocated space is the portion of a storage device not currently assigned to an active file by the file system, which often still contains remnants of deleted files because deletion typically removes only the file-system pointers rather than the underlying data. In digital forensics it is a valuable source of evidence, recoverable through file carving and other techniques until the sectors are overwritten by new data. Analysts examine it to retrieve deleted documents, fragments, and artifacts of prior activity.

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