32g memory card why shows only 16 35g

First of all, you need to understand the concept of storage modules, the computer looks for data in the storage carrier, and in order to increase the speed of searching, the carrier will be divided into units, and each unit will be labeled with an address. The name of each unit's specialty is called"Clusters".Different versions of the system, especially 32-bit and 64-bit systems, have different sizes for a cluster.

The previous 32-bit system mostly uses the FAT partition format, the FAT16 partition format is 1024B, the FAT32 partition format is 2048B, and the NTFS is 4096B. And this information is stored in clusters, but it is not necessarily to put a cluster and then put another cluster, the situation is similar to if you create three new folders for different information, each folder has a fixed capacity, one is used to put **, one is used to put **, one is used to put office data, and the data cannot be mixed with each other. Therefore, it is normal for the actual usable space of the USB flash drive to be smaller than the nominal space.

The nominal space is the same, but the available space is different, which should be related to the number of bits used in formatting and the partitioning method used for formatting, because the size of the cluster definition is different.

This is due to the fact that the algorithm is different.

Manufacturer's computing memory card capacity: Lao Xiao 1G 1000MB; Computer display memory card capacity: 1G=1024MB

Therefore, the actual capacity of the manufacturer's 32G memory card is: 32 1000 = 32000MB, and the computer display should be: 32000 1024 =.

As for why you only have 28GB, it may be that there is hidden space, which can be displayed by formatting it, or viewed with the computer's disk manager; Either it is a shrinkage plate, generally as long as it reaches 90% of the actual capacity, it is qualified, and the actual capacity of 32g 28g is a normal level.

The capacity of a normal hard disk is calculated by the number of bytes that can be stored. Generally speaking, the 8-bit binary code sequence is a byte, i.e., 8bit 1byte, 1024byte 1kb, 1024kb 1mb, 1024mb 1gb, 1024GB 1TB.

But hard disk manufacturers do not calculate according to this, they erase the fraction into 1KB 1000B, 1MB 1000KB, 1GB 1000MB, 1TB 1000GB Therefore, the actual capacity of the hard disk you see when you boot is always smaller than the nominal capacity, the reason is that the computing unit is different, the larger the capacity, the greater the gap between the nominal capacity and the actual capacity.

Your memory card is most likely an expansion card.

You can use mydisktest for capacity expansion testing.

If it is not an expansion card, open Disk Management and check whether the partition of the memory card is abnormal.

Why does a 32G memory card become 16M:

1. The memory card has been used and occupies only 16M of space, which is normal;

2. The memory card only uses xxg, but there is only 16m left, or the total space is 16m in the attributes: this is a 'expansion disk', and the purchase was fooled. Therefore, if you buy a USB flash drive, you will not be easily fooled if you have to carry the detection software with you, and JS will not sell you a fake USB flash drive if you see it.

There are two possibilities:

The bit system, which is generally only recognized, also occupies part of the integrated graphics card. If the integrated graphics card takes up a lot, the rest of the capacity will look like this.

3. The memory is set to a limit size. Click [Start], [Run], enter msconfig enter, then select [Boot], [Advanced Options], and then set it as shown below, remove the maximum memory check, and restart.

Because you are using a 32-bit operating system, the memory itself cannot be fully recognized, and if the current graphics card is a core graphics or integrated graphics, a part of the memory will also be divided as video memory.