Hard Disk Drive Operation and Physical Structure

Write head drive information from disk D in dishes aligning magnetic particles on the surface of these. Also, read the information by detecting polarized D and Q particles that were aligned. When the software asks the operating system to read or write a specific disk sector (Q DL), the controller orders the D and Q heads to move and read/write the sector track. The Q heads contain the read/write mechanism; expect that sector to pass exactly under them (X) to read or write about it.

Configuration and Installation

Configure your hard drive as Master or Slave D located in the central unit. Connect a flat data cable: 40 or 80-wire IDE, or 7-wire SATA. Connect the power supply and configure the setup. Make the disk partition and install the operating system. In Master/Slave configurations, if the motherboard has 2 IDE ports, up to 4 IDE devices can be connected. All IDE bridges must be configured as Master or Slave. There is a Cable Select mode where the disk self-configures its place depending on the cable DL D.

Connection might fail if the disks are not the same brand. Locate D in the central unit. Connect the IDE data cable; it has a colored band indicating where the Master is connected (pin 1 at the end of the BIOS cable). Connect the power supply. Configure the setup.

If the drive has an auto-detection feature (Q handles) that determines the characteristics of the installed drive, it will be recognized automatically. If it is not detected automatically, it might be because:

• The data cable connects incorrectly to the motherboard or controller card (Taejeta).
• It has not been powered (XQ).
• The capacity is greater than the BIOS admitted (XQ DL capacity).
• The BIOS needs an update, or sometimes the BIOS is faulty (XQ la BIOS).

Update the BIOS and install the driver disk DL.

Physical Structure

A hard disk is formed by a series of discs or plates stacked on each other within an airtight housing impermeable to dust. The dishes have a diameter between 2 and 5 inches, commonly 3.5 inches. Each dish has 2 sides; each side corresponds to a read/write head supported by an arm (brazo). In practice, between 2 plates contain 2 read/write heads, and sometimes 3 on one face. One face of a template can contain specific information used for positioning the heads; for this reason, some discs have one extra head (Q d surface).

Disk Organization

The surface of the plates is divided into concentric tracks numbered starting from the outside track number X 0. The set of tracks with the same number on each dish is called a cylinder. The tracks are, in turn, divided into sectors.