Why is the capacity of my USB flash drive getting smaller? How to solve it?

When you buy a USB flash drive, there should be a drive disk, where there is a low-level program of the USB flash drive, and it is OK to use it to use the low-level USB disk. If the drive disk has been lost or there is no low-level program in the disk, you can go to the official ** on the production of this kind of USB flash drive.

Make sure your USB stick can be restored!

Sympathy for you.

It is certain that your USB flash drive is fake, and the space after the expansion of illegal software that specializes in expanding the USB flash drive is also unstable, although it will not change much in 1,2 years, but the USB flash drive will automatically return to its original capacity after repeated access to files for a period of time, if this is the case.

Then there is no way.

If everything inside you are.

If you don't want it, it's better to format it. Otherwise, right-click on the USB flash drive Properties-Tools-Start Check, check the first item, click Start, and open it after the scan is completed.

It can be recovered, you have to use your U disk disc to find a special formatting tool to format your U disk.

U disk is not good at this point, if you accidentally lose the disk when storing things or for some reason, but use a special formatter Oh. Yes.

Try formatting, or your USB flash drive is expanding, and now it has changed back to normal.

You can get to:

The smaller the formatted month, the internal program of the USB flash drive itself will occupy a certain amount of space, and all the USB flash drives should be smaller than the target.

Checked. There are hidden files inside, which is very normal.

There is a part of the space in the USB flash drive that is not allocated, resulting in the problem of the capacity of the USB flash drive becoming smaller, which can be solved by the DiskGenius software, and the steps today are as follows:

<>5. Right-click the gray part above the software, click the Assign Free Space button in the submenu, and then select a drive letter in the submenu to allocate the free space.

6. After completion, exit the software, restart the computer, and you can see that the capacity of the USB flash drive has been increased, and the free space has been allocated, and you are done.

1. In the start menu - run, then enter cmd and press enter, which will enter the dos window and make noise, and then enter diskpart, so that it will enter the disk management command mode.

2. Enter the command "listdisk (pay attention to the space"), and then press enter to enter, you can see all the hard disk devices in your computer, of course, including U disk equipment, and you will find that the device capacity displayed here is the real capacity, that is to say, the above 16G, the appearance shown here is also 15G, which is normal, not 7G, so you know that the following operation is reliable, and the actual capacity can definitely be restored.

3. At this time, if we want to operate the U disk, we must use the command to select it, the example here is that "disk 2" is a U disk, so we enter the command "selectdisk2 (pay attention to the space)" and press enter, see the prompt "disk 2 is now the selected disk" means that it is successfully selected, you have to see how many disks your U disk is, it may be disk 3 or disk 4.

4. The key is here, at this time, enter the command "clean" to clear the disk, that is, to clear the U disk itself.

The U disk has been cleared by the system so far, and there is no drive letter visible in the U disk in the computer, so don't worry at this time, continue the operation.

5. Close the diskpart command window, right-click on my computer, select Manage in the pop-up menu, and then select "Disk Management".

6. In Disk Management, find your noisy U disk, at this time, you should upgrade the blind wheel to "unallocated" mode, right-click and follow the wizard to re-establish the U disk format.