Why do computers start with Disk C? Where’s the AB disk? After listening to the expert’s explanation, I understand

Human beings are not only the intelligent life of the earth, but also the ruler standing at the top of the earth’s food chain. The reason why human civilization has its present glory is closely related to the rapid development of science and technology. It can be said that when human beings entered the development of science and technology hundreds of years ago, they had the brilliant scientific and technological civilization now. Only in this way can people’s life become more and more beautiful. Only in this way can human beings go out of the earth to explore the universe and explore the mysteries of the world.

The rapid development of science and technology has given birth to many scientific and technological products, among which the computer is one of the greatest inventions in the 20th century. The rapid development of human science and technology in nearly half a century has a great relationship with the computer. The computer has super logical computing ability, its digital processing ability is tens of thousands of times more than the human brain.

The human brain takes years to complete the mathematical calculation, while the computer may only take a few minutes or even less. For example, for the number of PI, it is an infinite non circulating decimal. For thousands of years, countless mathematicians have devoted their lives to the calculation of the number of digits of PI, but PI has only been calculated to hundreds of thousands of digits after the decimal point.


However, since the advent of the computer, it has replaced the manual calculation of human beings. After inputting the formula into the supercomputer, the calculation of human beings for thousands of years has been completed in a few minutes. At present, the PI has been calculated to 2700 billion decimal places. What a huge number it is. If we still rely on manual calculation, we may not be able to do it in thousands of years.

Thus it can be seen that the computer has played an important role in the development of human civilization, and now it has become an indispensable tool in people’s hands. Although many of us are using computers every day, for many new people, we don’t know the history of computers. For example, why does the hard disk partition of computers start from disk C? Isn’t there an ab disk in front of C disk? Where are these two disks?

I believe many post-90s and post-90s can’t answer this question, but for many Post-70s and post-80s, this question is simple. Now let’s listen to the explanation of experts, and you will understand after reading it.

The computer is now familiar with our work, but its development has also experienced many changes. If you want to ask which science and technology in human science and technology civilization is developing fastest, it must be the computer. The first computer in the world was born in 1946. In 73 years, the computer has experienced many times of updating. Take the core CPU of the computer, which has been updated from 286386486586 to now.


Every update of the computer is a qualitative leap in performance. In the early days, computers were far less advanced than they are now. At that time, there was no hard disk file. The stored files and application programs were all on floppy disks. Floppy disk is one of the most popular computer devices at that time. To read the data of floppy disk, a floppy disk drive needs to be installed.

Many people may not have seen floppy disk now, but for many Post-70s and 80s, it is not strange. When Xiaobian first learned computer, he also started from the cognition of floppy disk. Generally, our computer will install two floppy disk drives, one for reading 3.5-inch floppy disk and the other for reading 5.25-inch floppy disk. In this way, a and B are occupied by the floppy disk drive as the first two drive letters.

I believe that many people have understood that disks a and B were used in the past floppy disk drives. With the continuous progress of the computer, the floppy disk drive can not keep up with the update of the computer gradually, and its many shortcomings also appear: small capacity, slow reading speed, low security of data storage, easy to lose data, etc.


At this time, the hard disk appeared, its advantages far exceed the floppy disk, and then the floppy disk drive was replaced by the hard disk, occupied an important position of the computer, and became a new storage device. Some people may say that since the floppy disk drive has been replaced by the hard disk, the location of disks a and B will be empty. Why don’t we continue to use disks a and B to the hard disk and let the partition of the computer start from disk a?

In fact, the main purpose of doing this is to maintain the compatibility and stability of the system. You should know that the initial core system of the computer has existed since the era of disk a and disk B. Although it is OK to partition the computer from disk a, it may reduce the stability of the system and cause some compatibility problems. To avoid this situation, the system starts from disk C by default.

Another reason is to commemorate the history of computers and remember the history of floppy disks. Although floppy disk has become a thing of the past, it once stood up and made great contributions to the development of human science and technology. In order to commemorate the era of floppy disk, the system specially left this letter empty, so that people can remember the era of floppy disk even after thousands of years.

The development of computer is at an end. The capacity of hard disk has reached TB level, and solid-state hard disk has gradually replaced mechanical hard disk. In the future, more advanced storage hardware will appear, and it is possible to completely replace hard disk. Perhaps in the near future stand up, a new hardware to replace the current hard disk, hard disk has become history.


In fact, the development of computer in the past is the era of machinery, while the development of computer in the future is the era of intelligence, that is, the rapid development of artificial intelligence in recent years. This is the result of computer updating from generation to generation. Although it is a kind of mechanical work, it can still be updated and improved with the continuous progress of human science and technology.

If the era of intelligence comes, artificial intelligence can learn by itself, whether it will evolve into a special digital life in the future is also unknown. If artificial intelligence evolves its own thinking consciousness and emotion in the future, it will become a new intelligent life, completely different from human intelligent life.

My friends, what do we think of this? Welcome to leave a message below to discuss and express your opinions.


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