Status: ✅ COMPLETE
Scope: How Windows organizes storage below the file system: the driver stack, disks, partitions, volumes, drive letters, Storage Spaces and the disk drivers
Time to complete: 75–100 minutes of reading + lab
Prerequisites: Chapter 4 (Motherboard and Hardware Communication), Chapter 6 (Boot Process), Chapter 13 (Drivers), Chapter 18 (Storage Devices)
What you'll know after: How a file request travels down to the SSD, how a disk is divided into partitions and volumes (MBR vs GPT), how drive letters and mount points work, what Storage Spaces does, and which drivers run your disks
INTRODUCTION
You save a file and it is "on the disk". But a lot happens in between. Windows does not talk to the SSD directly. It passes your request through a chain of layers: the file system, the volume manager, the partition manager, the disk driver and a controller driver. Each layer has one small job.
This chapter explains that chain and the organization of a disk: how one SSD is cut into partitions, how partitions become volumes, and how volumes get names like C:. It uses plain words, ASCII drawings, and a real Disk Management screenshot. Every technical term is explained the first time it appears.
This chapter explains:
- The storage stack, from
CreateFiledown to the hardware - Physical disks, partitions, volumes, and basic vs dynamic disks
- MBR and GPT, and the typical Windows 10/11 disk layout
- Drive letters, folder mount points and volume GUID paths
- Storage Spaces: pools, virtual disks, mirrors and parity
- Disk class, port and miniport drivers, and how they use queues, DMA and interrupts
CHAPTER OUTLINE
- Section 1: The Storage Stack
- Section 2: Disk Management Concepts
- Section 3: Partitioning Schemes
- Section 4: Volumes, Mount Points, and Drive Letters
- Section 5: Storage Spaces
- Section 6: Disk Drivers
- Practical Lab: Disk Management
- Knowledge Check
Chapter Status: Complete
Estimated reading time: 80 minutes
Practical time: 30 minutes
Knowledge check time: 30 minutes