In fact, the earliest computer hard disks did allocate characters from A to partition. The original operating system was still based on the DOS level, and DOS is the abbreviation of Disk Operation System. The allocation of characters was based on The process of naming "disk". At that time, there were no large-scale integrated hard drives in computers like now. They were all floppy disks - magnetic media similar to tapes
The original floppy disk was 5 inches. However, DOS was not widely used at that time. When DOS emerged, 3.5-inch floppy disks had already appeared, but 5-inch floppy disks had not yet disappeared. They were in the generation replacement stage. For the sake of high-end compatibility, when naming, 3.5-inch floppy disks were used. The drive letter was A, and B was fed a 5-inch floppy drive. Later, hard drives with IDE interfaces appeared, and C was naturally assigned the drive letter, and so on. The floppy drive technology has not improved, and it has stayed at the 3.5-inch level.
When we use it now, we occasionally use the A drive letter (especially Win98 and other systems). If there is no floppy drive on your machine, it is virtual and simulates running under DOS. State, since the 5-inch B drive was completely replaced by the A drive, the B drive is almost extinct. Now that XP, Vista and other NT-based operating systems have come out, the A drive is about to die because it has been completely replaced. PS: The theoretical maximum capacity of a 3.5-inch floppy disk is 1.44MB, while a 5-inch floppy disk has a theoretical maximum capacity of 1.44MB. Not only is the disk larger, but the capacity is smaller (it’s so old that I can’t remember...)
Are you satisfied~~