When USB cannot be formatted
reference
★ I referred to this ★
Look up the USB name
fdisk -l
Make sure to format with the fdisk command
- Press d (Delete Partition)
- Enter (Delete default partition)
- Repeat steps 1 and 2 until there are no more partitions
- Press n (Create new partition)
- Press p (Create Primary Partition)
- Press 1 (create partition 1)
- Enter (first)
- Enter (last)
- Press w (write complete)
Unmount USB
umount /dev/sdb1
FAT file system creation
mkfs.vfat -F 32 /dev/sdb1
Those who want to know a little more
★ I referred to this ★