repair flash device

To delete the table of divisions with flash device, for example after unsuccessful
experiment it is enough to input . Personally for me flash device refused to answer on mount, i thought already ...
sudo dmesg | grep removable device SCSI
# dd if=/dev/zero of=/dev/name_of_device_sdb bs=512
count=1
# mkfs.msdos /dev/name_of_device_sdb
sometimes mkfs.msdos -I /dev/name_of_device_sdb
mkfs - can be ext , fat32 or etc.