(This is an introduction to the basic knowledge of hard disks. It is very basic. All thoughts are so far. Don't get tangled up in making too many redundant statements on some incomprehensible and jerky issues.
Chapter 1: Physical Structure and Principle of Hard Disk
Chapter 2: Basic Parameters of Hard Disk
Chapter 3: Introduction to the logical structure of hard disks
Chapter 4: Physical Installation of Hard Disk
Chapter 5: System Startup Process
Chapter 6: Brands of hard drives
Chapter 7: Hard disk circuit board testing and maintenance skills)