在Linux下无法识别USB驱动器
时间：2020-01-09 10:44:01 来源:igfitidea点击:
为了在Linux下访问USB驱动器，您需要加载特殊的USB驱动器，并且运行Linux内核中必须包含支持。
尝试一个接一个地执行以下命令来解决您的问题：
步骤1：确保系统检测到您的外部驱动器运行dmesg命令，该命令可打印或者控制内核环形缓冲区：
dmesg
或者
dmesg | grep i USB
输出：
SLPB PCI0 HUB0 USB0 USB1 USB2 USBE usbcore: registered new driver usbfs usbcore: registered new driver hub USB Universal Host Controller Interface driver v2.3 uhci_hcd 0000:00:1d.0: new USB bus registered, assigned bus number 1 hub 1-0:1.0: USB hub found uhci_hcd 0000:00:1d.1: new USB bus registered, assigned bus number 2 hub 2-0:1.0: USB hub found uhci_hcd 0000:00:1d.2: new USB bus registered, assigned bus number 3 usb 1-2: new full speed USB device using uhci_hcd and address 2 hub 3-0:1.0: USB hub found
如您所见，内核中包含USB支持。
您还可以使用以下命令对此进行验证：
lspci -v | grep HCI
输出：
0000:00:1d.0 USB Controller: Intel Corporation 82801DB/DBL/DBM (ICH4/ICH4-L/ICH4-M) USB UHCI Controller #1 (rev 02) (prog-if 00 [UHCI]) 0000:00:1d.1 USB Controller: Intel Corporation 82801DB/DBL/DBM (ICH4/ICH4-L/ICH4-M) USB UHCI Controller #2 (rev 02) (prog-if 00 [UHCI]) 0000:00:1d.2 USB Controller: Intel Corporation 82801DB/DBL/DBM (ICH4/ICH4-L/ICH4-M) USB UHCI Controller #3 (rev 02) (prog-if 00 [UHCI]) 0000:00:1d.7 USB Controller: Intel Corporation 82801DB/DBM (ICH4/ICH4-M) USB2 EHCI Controller (rev 02) (prog-if 20 [EHCI])
步骤2：加载USB模块/驱动程序如果在dmesg输出中看不到外部USB驱动器，请尝试加载usb-uhci和usb-ohci模块(驱动程序)：
modprobe usb-uhci modprobe usb-ohci modprobe usb-storage
现在再次运行dmesg：
dmesg
输出：
usb 4-1: new high speed USB device using ehci_hcd and address 3 scsi2 : SCSI emulation for USB Mass Storage devices usb-storage: device found at 3 usb-storage: waiting for device to settle before scanning Vendor: SAMSUNG Model: SV4002H Rev: 0811 Type: Direct-Access ANSI SCSI revision: 00 SCSI device sdb: 78242976 512-byte hdwr sectors (40060 MB) sdb: assuming drive cache: write through SCSI device sdb: 78242976 512-byte hdwr sectors (40060 MB) sdb: assuming drive cache: write through sdb: sdb1 sd 2:0:0:0: Attached scsi disk sdb usb-storage: device scan complete
步骤3：使用外部USB驱动器如您所见，将设备sdb分配给了外部USB驱动器，请使用mount命令来安装驱动器：在/dev/sdb上列出分区：
fdisk -l | grep sdb
输出：
Disk /dev/sda doesn't contain a valid partition table Disk /dev/sdb: 40.0 GB, 40060403712 bytes /dev/sdb1 1 4870 39118243+ c W95 FAT32 (LBA)
现在挂载分区：
mount /dev/sdb1 /mnt
