Course 36 - Windows Forensics and Tools | Episode 2: Windows Forensic Imaging and Drive Nomenclature

In this lesson, you’ll learn about: Windows forensic imaging and data structure fundamentals1. What is Forensic Imaging?

• A bit-by-bit, sector-by-sector copy of a storage device
• Captures everything, not just visible files

🔹 What it Includes

• Active files and folders
• Deleted files
• Unallocated space
• Slack space

👉 Key Difference:

• Not a backup → it is an exact forensic replica

2. Why Forensic Imaging Matters

• Preserves original evidence
• Prevents modification of:
  • File timestamps
  • Metadata

👉 Legal Importance:

• Required for court-admissible investigations

3. Physical vs Logical Drives (Windows Naming)🔹 Physical Drives

• Identified as:
  • Disk 0
  • Disk 1
• Represent actual hardware

🔹 Logical Drives

• Represent partitions using letters:
  • C:
  • D:
  • E:

👉 Analogy:

• Physical disk → entire cabinet
• Logical drives → drawers inside the cabinet

🔹 Historical Note

• A: and B: reserved for floppy disks

4. File System Hierarchy🔹 Structure Levels

1. Volume (highest level)
2. Partition
3. Directory (folder)
4. File

🔹 File Definition

• A logical grouping of related data

👉 Key Insight:

• Understanding hierarchy helps in locating and analyzing evidence

5. Processes and Threads (Execution Basics)

• Process → running program
• Thread → smallest execution unit within a process

👉 Why it matters:

• Helps track:
  • Program execution
  • Malicious activity

6. Data Integrity & Verification🔹 Hashing Concept

• Generate a unique fingerprint for data

🔹 Algorithm Example

• MD5 hash

🔹 Key Properties

• Same file → same hash
• Rename file → hash unchanged
• Change 1 bit → completely different hash

👉 Use Case:

• Verify forensic image integrity

7. Chain of Trust in Forensics

• Acquire image → generate hash
• Analyze copy → compare hash again

👉 Goal:

• Ensure no tampering occurred

Key Takeaways

• Forensic imaging captures complete disk data, including hidden content
• Physical and logical drives represent different abstraction layers
• File systems follow a structured hierarchy
• Hashing ensures data integrity and authenticity
• Even a tiny change in data invalidates evidence

Big PictureForensic imaging helps you:👉 Move from raw disk → verified evidence copyMental Model

• Disk → Image → Hash → Analyze → Verify

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