Flash drive capacity prompt:
Inconsistent units of measurement lead to data inequality (differences between decimal and binary)
The manufacturer of a USB flash drive refers to the international standard unit of
measurement (decimal) used to represent the storage capacity of the USB flash drive
That is 1 GB=1000 MB. But in the world of computers, data storage is represented in binary, 1GB=1024MB。
The second reason is file system occupancy: USB drives need to be formatted and have a
file system established (such as FAT32, exFAT, etc.) before they can be used.
The file system itself (such as the main boot record, file allocation table, etc.) will occupy a small amount of storage space.
Therefore, there are some differences between the display capacity and nominal capacity of flash memory products:
Reference:
16GB=approximately 14.6GB
32GB=approximately 29GB
64GB=approximately 58GB
128GB=approximately 117GB