How to mount the FAT32 USB disk _linux under Linux system

Linux mount U disk steps are as follows

1: The USB disk plug into the interface, check whether inserted good

2: Check partition and USB device information with fdisk command

[Root@wgods ~]# Fdisk-l

disk/dev/sda:1000.2 GB, 1000204886016 bytes
255 heads, Sectors/track, 121601 cylinders
Units = Cylinders of 16065 * 8225280 bytes

Device Boot Start End Blocks Id System
/DEV/SDA1 * 1 104391 Linux
/dev/sda2 121601 976655610 8e Linux LVM

disk/dev/sdb:4012 MB, 4012900352 bytes
223 heads, Sectors/track, 639 cylinders
Units = Cylinders of 12265 * 6279680 bytes

Device Boot Start End Blocks Id System
/DEV/SDB1 * 640 3580928 C W95 FAT32 (LBA)
Partition 1 has different physical/logical beginnings (Non-linux?):
Phys= (55, 23, 1) logical=
Partition 1 has different physical/logical endings:
phys= (487, 222, logical=) (639, 6, 31)

We can see from the above information that the USB device is FAT32 format, identified as/DEV/SDB1

[Root@wgods ~]# fdisk-l | grep FAT32
/DEV/SDB1 * 640 3580928 C W95 FAT32 (LBA)

3: In the MNT directory to build a USB directory first

[Root@wgods ~]# cd/mnt/
[Root@wgods mnt]# mkdir USB

4: Mount U disk
[Root@wgods mnt]# mount-t Vfat/dev/sdb1/mnt/usb

After the mount is successful, we can see the relevant content under/MOUNT/USB.

5: Uninstall U disk

Execute umount Command Uninstall u disk, the following error "Device is busy", you can use parameter l to solve the problem. Of course, you can also use the fuser command to solve the problem. As shown below

[Root@wgods ~]# Umount/mnt/usb
Umount:/mnt/usb:device is busy
Umount:/mnt/usb:device is busy

[Root@wgods ~]# umount-f/mnt/usb
Umount2:device or resource busy
Umount:/mnt/usb:device is busy
Umount2:device or resource busy
Umount:/mnt/usb:device is busy

[Root@wgods ~]# umount-l/mnt/usb

Problem solving

---------------------------------------------------------------------------------

[Root@wgods usb]# Umount/mnt/usb
Umount:/mnt/usb:device is busy
Umount:/mnt/usb:device is busy
[Root@wgods usb]# fuser-m/mnt/usb
/mnt/usb:21123c 21158c 21180c 21182c 21223c
[Root@wgods usb]# Ps-auxw | grep 21123
Warning:bad syntax, perhaps a bogus '-'? See/usr/share/doc/procps-3.2.7/faq
Root 21123 0.0 0.0 3784 672 PTS/2 T 15:10 0:00 more 12.sql
Root 21346 0.0 0.0 3920 696 pts/2 s+ 15:52 0:00 grep 21123

[Root@wgods usb]# Fuser-kvm/mnt/usb

USER PID ACCESS COMMAND
/mnt/usb:root 21123 F.C. More
Root 21158. C.. Mans
Root 21180. C.. sh
Root 21182. C.. less
Root 21223. C.. bash

[Etl@wgods ~]$ Umount/mnt/usb
Umount:/mnt/usb is isn't in the fstab (and, are not root)
[Etl@wgods ~]$ Su-root
Password:
[Root@wgods ~]# Umount/mnt/usb

6: Remove the USB directory
[Root@wgods ~]# umount-l/mnt/usb
[Root@wgods ~]# Rm-rf/mnt/usb

Note: Sometimes when mounted, the Chinese file name and directory name will appear garbled, in order to avoid this situation can specify the character set, the following command

[Root@wgods ~]# mount-t vfat-o Iocharset=utf8,codepage=uft8/dev/sdb1/mnt/usb

[Root@wgods ~]# mount-t vfat-o Iocharset=cp936,codepage=936/dev/sdb1/mnt/usb

Note: cp936 refers to Simplified Chinese, cp950 refers to traditional Chinese.