如何安装外部 USB 硬盘，该硬盘在 dmesg 和 lshw 中显示，但在其他地方却不显示

Question

我刚买了一个外置 USB 硬盘用于备份。插入后，dmesg我看到：

[    1.619343] usb 1-7: new high-speed USB device number 4 using xhci_hcd
[    1.769014] usb 1-7: New USB device found, idVendor=174c, idProduct=55aa, bcdDevice= 1.00
[    1.769026] usb 1-7: New USB device strings: Mfr=2, Product=3, SerialNumber=1
[    1.769032] usb 1-7: Product: Elements
[    1.769037] usb 1-7: Manufacturer: WD
[    1.769041] usb 1-7: SerialNumber: 00000000017E
[    1.777056] usb-storage 1-7:1.0: USB Mass Storage device detected
[    1.777301] usb-storage 1-7:1.0: Quirks match for vid 174c pid 55aa: 400000
[    1.777343] scsi host6: usb-storage 1-7:1.0

lshw看到它：

 *-usb:2
               description: Mass storage device
               product: Elements
               vendor: WD
               physical id: 7
               bus info: usb@1:7
               version: 1.00
               serial: 00000000017E
               capabilities: usb-2.10 scsi
               configuration: driver=usb-storage speed=480Mbit/s

但无论是lsusb还是sudo fdisk -l( disksGUI 实用程序) 都看不到它。我该如何安装它？