I used to play a lot with USB (making bootable images, encrypting, formating, etc). I got to a point where when I format it the space of the USB is lost. This is a tutorial on how to recover that space.
This has happened to me when I use the USB drive as bootable of .iso files
1. Open CMD as administrator
2. Enter to disks view
- diskpart
3. List the available disks
- disk list
4. Select the disk
- select disk 2
5. Clean the disk
- clean
6. Create a partition
- create partition primary
7. Format the drive
8. It should now show the real storage space
