What is the letter? What is the U disk drive?
A partition or storage device is representative of letter symbols in computerNow from the beginning of c...
The letter is the disk labeled U disk drive is U disk drive letter is C
The computer C drive, D disk, E disk and other "C", "D", "E" is their corresponding letter, you put the driver symbols inserted U disk USB interface in the "my computer" there will be a corresponding display "removable disk X" (the X to English letters), rather than the U disk drive is U, for example, I put the U disk into the computer, it displays the "removable disk A", then A is my U disk drive, the automatically assigned according to the partition of your computer