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What is inside a hard disk on the computer?
Ferrite or cobaltite crystals are within a hard disk.
How many read write heads are required for each hard disk platter?
2 per platter
Does the read write heads on a hard disk drive actually touch the surface of the disk?
no, the head not touching the surface of the hard disk. If it touch the great chance of data may be lost. only the head of floppy disk is touch the surface of the disk.
What heads float on a cushion of air above the the platter?
In a hard drive, the read/write heads float on a cushion of air above the platter. This ensures that there is a tiny gap between the heads and the spinning platter, allowing the heads to read and write data without physically touching the surface of the disk.
How is magnetism used in a computer?
Magnetism is used to operate the fan motors and the disk drive motors as well as operating the "voice coil" that causes the disk read/write heads to move. The surfaces of the hard disk "media" is magnetized to represent data. The hard disk read/write heads are nothing more than small electromagnets and as the heads move across the spinning disk media, magnetic data is sent or received by the disk heads. Older computers used a magnetic "core" to store data. That's the origin of the term, "core memory". With the decrease in cost ind incredible speed of transistor based memory, nobody uses magnetic core any more.
Which part of a hard disk moves the fastest past the read and write heads and therefore is the most desirable location for commonly used files?
The outer edge.
What are the parts of the hard disk?
A hard disk can be either internal or external and one can use it to save files. The parts of a hard disk are the disk case, spindle, disk platter, actuator and the read-write arm.
What is the difference between fixed head disk ande movable head disk?
fixed head :-one read / write head per track-heads mounted on fixed ridged arm-No drop protectionmovable head :-one read / write head per side-mounted on a movable arm-if dropped the heads can be retracted to prevent damage to the hard drive.
What is crashed hardware?
In a hard disk the heads fly above the surface on a thin cushion of air, to prevent wear to the disk or heads. Should something cause the heads to touch the moving disk surface it is called a "head crash" and is not all that different from an airplane crash, as the heads quit flying on their cushion of air.
What is disk caching?
Disk caching improves the time it takes to read and write from a hard drive. A disk cache is essentially RAM that is built into your hard drive.
The circular disk inside the hard drive is called a?
The circular disk inside a hard drive is called a platter. Platter surfaces are coated with a magnetic material that allows data to be stored and retrieved by read/write heads as the platters spin at high speeds. Multiple platters can be stacked in a single hard drive to increase storage capacity.
What is disk drive?
A disk drive is a device that computers can use to read and write information on computer disk. An example of one is the hard disk drive.
