Deleting Linux Partitions on USB Drive From Windows 10
How to Delete Linux Partitions on USB Drive using DISKPART on Windows 10
On your Windows 10 computer, insert the linux USB drive
Press the Windows + R button on your keyboard
In the newly launched RUN box, type:
And press Enter
From the DISKPART box, type in the following commands
Now find your USB Drive. My USB Drive is Disk 1, so I will use that for the rest of the guide.
select disk 1
select partition 1
delete partition 1 override
select partition 2
delete partition 2 override
Do those steps until you have deleted all of the partitions. Close the dialog box. Remove the Drive, and you are ready to go with a new, fresh, unformatted drive.