Car stereo can't see music files on USB flash drive because of the extra partition that can't be deleted?

I have a USB flash drive that shows two partitions when connected to a Windows 11 machine. The D: partition is called USB Driver and has one setup.exe file on it. This partition is read only and all of the diskpart, clean, Minitool, Macrium reflect, etc. methods have failed to remove it. This partition is causing the USB drive to be unusable in the car stereo because it sees that partition instead of the E: partition that has the music files on it. The car stereo recognizes the flash drive, but fails to find any files. I am fairly certain that the read only partition was created when I used th

Question by Richard Mast on Super User, licensed CC BY-SA. We show a short excerpt and link to the original thread as credit.