FAT12

Björn Götz

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Table of Contents

FAT12

Introduction
Prerequisites
Part I: Reading
Chapter 1: Hello, Disk!
Chapter 2: Mounting the Filesystem
Chapter 3: Listing the Root Directory
Chapter 4: Reading Files
Chapter 5: Reading Multi-Cluster Files
Chapter 6: Full Path Walking
Part II: Writing
Chapter 7: Deleting
Chapter 8: Moving (and Renaming)
Chapter 9: Creating Directories
Chapter 10: Writing Files
Part III: Advanced
Chapter 11: Formatting
Chapter 12: Running FAT12 Inside a Kernel
Conclusion
- What’s Next
- Thank You
Appendixes
Appendix A: Talking to a Real Disk
Appendix B: A First Look at Long Filename Support (LFN / VFAT)
Appendix C: The Boot Sector Fields We Skipped
Appendix D: FAT12 vs. FAT16 vs. FAT32

FAT12/Appendix C: The Boot Sector Fields We Skipped

Appendix C: The Boot Sector Fields We Skipped

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Booting from FAT12

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Which Disk? The Drive Number

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Where Is the Volume? Hidden Sectors

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Cylinders, Heads, and Sectors (CHS)

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The Extended BPB’s Identification Fields

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OEM Name (Original Equipment Manufacturer)

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Media Descriptor

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Appendix B: A First Look at Long Filename Support (LFN / VFAT)

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Appendix D: FAT12 vs. FAT16 vs. FAT32

In this chapter

Appendix C: The Boot Sector Fields We Skipped
Booting from FAT12
Which Disk? The Drive Number
Where Is the Volume? Hidden Sectors
Cylinders, Heads, and Sectors (CHS)
The Extended BPB’s Identification Fields
OEM Name (Original Equipment Manufacturer)
Media Descriptor
Back to Our Formatter