Problem with formatting flash USB

When you unplug the device, do you use the safe remove feature in the OS before unplugging it or do you just pull it out?
Does it work in order OSes?

it didn't shows in launcher menu.. to format it, launcher,disk, then it appears ,name of the device..,
and i use it, safe remove feature
i'm on ubuntu 14.04 64 bit by the way

Does it show in other OSes?

No i just have ubuntu 14.04

With the device attached, what is the output of:

sudo parted -l; lsb_release -a; uname -a

Thanks

Model: (scsi)
Disk /dev/sdb: 8580MB
Sector size (logical/physical): 512B/512B
Partition Table: msdos

Number Start End Size Type File system Flags
 1 1049kB 8580MB 8579MB primary

Model: Linux device-mapper (linear) (dm)
Disk /dev/mapper/ubuntu--vg-swap_1: 4274MB
Sector size (logical/physical): 512B/512B
Partition Table: loop

Number Start End Size File system Flags
 1 0.00B 4274MB 4274MB linux-swap(v1)

Model: Linux device-mapper (linear) (dm)
Disk /dev/mapper/ubuntu--vg-root: 316GB
Sector size (logical/physical): 512B/512B
Partition Table: loop

Number Start End Size File system Flags
 1 0.00B 316GB 316GB ext4

Error: /dev/mapper/sda5_crypt: unrecognised disk label

No LSB modules are available.
Distributor ID: Ubuntu
Description: Ubuntu 14.04.2 LTS
Release: 14.04
Codename: trusty
Linux nouha-VPCEH16EF 3.13.0-48-generic #80-Ubuntu SMP Thu Mar 12 11:16:15 UTC 2015 x86_64 x86_64 x86_64 GNU/Linux

Thanks actionparsnip, that solved my question.