openwrt 接入移动硬盘后……

没有直接出现共享文件夹
用dmesg命令查看结果如下：
[119052.860000] usb 1-1: USB disconnect, device number 2
[119053.280000] usb 1-1: new high-speed USB device number 3 using ehci-platform
[119053.470000] usb-storage 1-1:1.0: USB Mass Storage device detected
[119053.490000] scsi1 : usb-storage 1-1:1.0
[119055.020000] scsi 1:0:0:0: Direct-Access NORELSYS 106X CC4B P Q: 0 ANSI: 6
[119055.030000] sd 1:0:0:0: Attached scsi generic sg0 type 0
[119055.030000] sd 1:0:0:0: [sdb] 1953525168 512-byte logical blocks: (1.00 TB/9 31 GiB)
[119055.040000] sd 1:0:0:0: [sdb] Write Protect is off
[119055.050000] sd 1:0:0:0: [sdb] Mode Sense: 43 00 00 00
[119055.060000] sd 1:0:0:0: [sdb] Write cache: disabled, read cache: enabled, do esn't support DPO or FUA
[119057.950000] sdb: sdb1
[119057.980000] sd 1:0:0:0: [sdb] Attached SCSI disk

df命令不能看到移动硬盘，
请问该如何设置使得热插拔的移动硬盘被识别？