Have your ever wanted to have a backup of your Esxi boot usb drive? Did you want to make your large size usb drive free and replace it with a smaller one ?
Here is the solution , USB Imaging Tool by Alexander Beug. You just need to download and run the mentioned application and press backup button to make a .img file containing all six partiotions of your Esxi boot usb drive.
Now you have an IMG file that can be written on another flash drive or be kept as a backup. The interesting point is that you can restore it on a flash drive with a lower capacity but you need to config the application as below before pressing the Restore button