Is your USB key faulty? Have you been scammed by a seller of doctored USB drives indicating greater capacity than it actually is?
Obviously by dint of filling this USB stick defective, you will face data loss as new files erase old ones. Because Windows will rewrite on already used parts until making the key completely unusable.
Fortunately, all is not lost, there is a solution to limit the damage: restore the real capacity of a USB stick to be able to use it anyway.
Thanks to the tool H2testw, it is possible to restore your USB key to its real capacity.
H2testw is a program that allows you to check the status of your USB key and find its real capacity.
To do this, it performs a series of write tests all over your USB key to check if it finds any errors. It is a simple executable of a few kilobytes requiring no installation and completely free.
How to restore the real size to your USB key?
First of all, download H2testw from the official website. Then run H2testw and do Select Target.
Normally the true size should be displayed. Then do Write + Verify.
After clicking on Write + Verify, a report is produced giving information on the actual size of your key: a good way to verify its exact size.
If it doesn't work, but you got the true size, use MiniTool Partition Wizard Free to adjust the partition to the correct size.
MiniTool Partition Wizard is renowned as one of the best partition managers. It can change the size of the USB drive under almost all Windows systems.
To do this, launch the program and right click on your USB key then click on Move / Resize.
Finally, adjust the partition to the correct size that you got with the H2testw tool.
And There you go ! You now have a functional USB stick with its original storage capacity