挂载硬盘，出现下面的错误信息，请问是什么愿意?

DDDFFER

[ 3970.790000] usb 1-1: USB disconnect, device number 2
[ 3971.090000] usb 1-1: new high-speed USB device number 3 using ehci-platform
[ 3971.240000] scsi1 : usb-storage 1-1:1.0
[ 3971.290000] Buffer I/O error on device sda1, logical block 9469952
[ 3971.290000] lost page write due to I/O error on sda1
[ 3971.300000] JBD2: I/O error detected when updating journal superblock for sda1-8.


[ 3974.600000] sd 1:0:0:0: [sdb] Write Protect is off
[ 3974.610000] sd 1:0:0:0: [sdb] Mode Sense: 34 00 00 00
[ 3974.610000] sd 1:0:0:0: [sdb] Write cache: disabled, read cache: enabled, doesn't support DPO or FUA
[ 3974.660000]  sdb: sdb1 sdb2
[ 3974.670000] sd 1:0:0:0: [sdb] Attached SCSI disk
之前是重启就能识别了，现在连重启都没办法识别出硬盘了。。这是硬盘坏了吗？

7440909

fsck试一下吧。