Tip & How-To about The Computers & Internet
USB flash drive is not showing full capacity
Compared to hard drives, USB flash drives are much inexpensive and widely used in daily work and life, which is the best choice to save important data and program setting on hand. However, it's common to see that someone's USB flash drive is showing less GB in disk space than actual suddenly. For example, a 16 GB or 8 GB USB pen drive became 3GB, 0.99GB, 64MB, 30MB or even 4MB. Let's see why doesn't USB flash drive show right amount of space.
There are several reasons to cause the issue. USB disks infected with malware is one way to reduce the capacity even you have removed the malware. Hidden partitions, overhead formatting and hibernate files may make your USB flash show less capacity as well. Formatted on the USB flash drive on one computer and use it on another computer may lead the wrong display.
How to fix the USB flash drive not showing full capacity issue
It's really annoy that you can't neither use the full capacity of the USB flash drive nor access the data on it. To restore your USB flash drive back to full capacity, you need to format the USB disk firstly. You need to back up all your important data before reformatting the removable disk, because all data will be erased.
Fix the USB flash drive not showing full capacity with Diskpart
1) Use the Windows key + R keyboard shortcut to open Run box, and type "diskpart", click OK to enter the Diskpart utility;
2) Connect the USB flash drive you want clean and format to your computer and here the disk 2 is it;
3) When load to the Diskpart interface, type list disk and press Enter;
4) Type select disk 3 here and press Enter;
5) Type clean to clean the USB flash drive and press Enter;
6) Type create partition primary command and press Enter;
7) Type active command and press Enter;
8) Type format fs=ntfs label="MY USB DRIVE" command to format the USB flash drive and press Enter. Here the MY USB DRIVE is the label given to your removable disk, and ntfs is the file system;
9) Type assign and press Enter;
10) The last step is to type exit and press Enter to finish the format.
Posted by Connie on
click start control panel administrive tools computer management disk management right click on your drive select properties then security select take full control in windows 7
USB drives can be write-protected by modifying the StoreageDevicePolicies Registry key and WriteProtect Registry value.
click Start>run>regedit to open Registry Editor. and press control+F to open the find dialogue box and type "usb device" or "driverdesc" to open usb mass storage device or type "usb mass storage device" in the search windows. And right click on it and delete. This will set the policy value to 0. then insert your usb device. It will work fine.
# Remember: do not delete any unknow files in the registry as this will make some programes not work as usual.
If you are running a Windows XP OS then you might be able to:
- click start right click on my computer select open
- Right click the icon of your Flash Drive (It should be F:/ or something)
- Click Properties in the menu that comes up
- Click the Sharing tab
- Click permissions
- And finally, click Allow next to Full Control.
hope this helps
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