The impact of the U disk format on the number of file copies:
When you copy a small number of files to a U disk, only copy to more than 200 files, the system prompts "disk capacity is full", and the total capacity of these files is only 30MB, and the copy speed is very slow, far from the nominal 800kbps per second speed.
The above situation is not a U disk problem, and this is the trouble with the file system, the current mobile memory, including flash memory, mobile hard disk, are the use of the FAT file system, according to the FAT file system standard definition, the root directory can only exist at most 254 files (including directories), and to copy files to the Flash, Each copy of a file, the system will create a file table, and flash exists when copying large files, because it is continuous writing, do not need to create a file table, so it is much faster than copying a single small file.
Workaround:
Pack a lot of small files into a compressed package and save the U disk. You can also convert the U disk to the file system format of NTFS