Error: Target device is currently busy, unmount all mounted partitions in target device then try again
Target device is busy, please make sure you unmount all filesystems on target device or shutdown the computer before detaching it.
uma recomendação que te dou e usar o ventoy assim vc nao vai mais precisar ficar criando pendrives e so colar a ISO dentro do pendrive e pronto https://www.youtube.com/watch?v=YxW_L2Us0Is