Mount and unmount a USB flash drive on a mobile hard disk in RedHat

Before inserting a USB flash drive

Look at the disks recognized by the system: # Cat/proc/Partitions

[11:48:48Root @ hzkf]/root> CAT/Proc/Partitions
Major minor # Blocks name

8, 0, 1953514584, SDA
8 16 1953514584 SDB
8 32 117220824 SDC
8 33 200781 sdc1
8 34 117017460 sdc2
253 0 1855870976 dm-0
253 1 1855868931 dm-1
253 2 782008320 dm-2
253 3 104857600 dm-3
253 4 419430400 dm-4
253 5 524288000 dm-5
253 6 25165824 dm-6

Connect to the USB flash drive

# Cat/proc/Partitions

major minor # Blocks name

8, 0, 1953514584, SDA
8 16 1953514584 SDB
8 32 117220824 SDC
8 33 200781 sdc1
8 34 117017460 sdc2
253 0 1855870976 dm-0
253 1 1855868931 dm-1
253 2 782008320 dm-2
253 3 104857600 dm-3
253 4 419430400 dm-4
253 5 524288000 dm-5
253 6 25165824 dm-6
312571224 SDD
8, 49, 312568641, sdd1

Multiple sdd1 instances are displayed.

# Mkdri/mnt/USB

# Mount-t ntfs/dev/sdd1/mnt/USB

In this way, the mounting is successful.

 

############# #####

Forcible: umount/mnt/USB

Tip: umount2: the device or resource is busy umount: device is busy

Use the following command

# Fuser-k/mnt/USB

# Umount/mnt/USB