This is quite a mutual employment when y'all guide maintain a USB Disk that was used to burn downwardly a Bootable Linux distro is dd mode. You plug inwards the USB effort inwards Windows 10 (or whatsoever windows for that fact) together with all y'all run across is a Drive amongst nothing MB disk infinite or inwards or together with hence cases it shows “14.0 KB gratuitous of 2.35 MB” message. 
It is annoying every bit Windows seems to last completely unable to recover disk space. Disk Management shows the sum disk size, cannot format it. I could become on amongst the annoyances but inwards curt all nosotros involve is to format Linux USB Drive to recover, re-partition together with reformat that disk inwards Windows 10. In fact it industrial plant inwards Windows 8.1, Windows vii every bit well.
The next procedure tin wipe entire disk, together with hence last rattling careful which disk y'all choose together with wipe clean.
Step 1: Run Administrator Command Prompt
On Windows 10, Windows 8.1 together with Windows vii search for command together with only right-click Command Prompt shortcut from the search results together with choose Run every bit administrator. Don’t purpose Powershell every bit sometimes it tin teach tricky.
Step 2: Use diskpart to build clean disk
Now connect your USB effort that y'all desire to clean, reformat together with recover space. SD cards, external hard-disks. etc. would operate the same way. Just know that this procedure volition only teach rid of all the information without whatsoever warnings.
Type inwards diskpart in Administrator: Command Prompt together with press enter.
Microsoft Windows [Version 10.0.15063]
(c) 2017 Microsoft Corporation. All rights reserved.
C:\WINDOWS\system32>diskpart
Microsoft DiskPart version 10.0.15063.0
Copyright (C) Microsoft Corporation.
On computer: RAZER-LAPTOP
List all the disk amongst list disk command.
DISKPART> listing disk
Disk ### Status Size Free Dyn Gpt
-------- ------------- ------- ------- --- ---
Disk 0 Online 476 GB 2048 KB *
Disk 1 Online 1997 MB 1996 MB
This is the crucial part. Examine all the disks, size etc carefully. From my output, it’s pretty build clean that I desire the 2nd disk (in this instance Disk 1) clean, formatted together with infinite recovered. It’s solely 2GB inwards size (it shows 1997 MB though).
One matter for sure, I don’t desire anything to hap to Disk 0. So let’s last careful run select Disk 1 command. (in your case, y'all powerfulness last selecting other disks numbers.).
DISKPART> choose Disk 1
Disk 1 is straightaway the selected disk.
Almost there. I volition accept few to a greater extent than moments earlier I number clean command. It volition build clean the partitioning together with teach inwards available for formatting again.
DISKPART> clean
DiskPart succeeded inwards cleaning the disk.
I teach DiskPart succeeded inwards cleaning the disk every bit the response. Once you’ve got it, y'all tin only closed Command Prompt.
Step 3: Re-partition together with format
Run Disk Management tool on Windows 10 or Windows 8.1 or Windows 7. Now only right-click on Disk 1 together with choose New Simple Volume. Follow the prompts together with you’ve exactly recovered the disk space.
You tin straightaway purpose this USB to practice a Kali Bootable Non-Persistence USB Drive!
