我有一个外部 USB cdrom 驱动器，但在 RHEL 7.4 中找不到它。附图是我的“ls /dev/”的结果。
当我执行“cat /var/log/dmesg | grep usb”时，我得到以下结果，但我没有在其中看到它所在的开发文件，以便我可以安装它。
[ 4.681422] usbcore: registered new interface driver usbfs
[ 4.681434] usbcore: registered new interface driver hub
[ 4.682125] usbcore: registered new device driver usb
[ 5.335985] usb usb1: New USB device found, idVendor=1d6b, idProduct=0002
[ 5.335988] usb usb1: New USB device strings: Mfr=3, Product=2, SerialNumber=1
[ 5.335990] usb usb1: Product: EHCI Host Controller
[ 5.335993] usb usb1: Manufacturer: Linux 3.10.0-693.el7.x86_64 ehci_hcd
[ 5.335995] usb usb1: SerialNumber: 0000:00:1a.0
[ 5.346949] usb usb2: New USB device found, idVendor=1d6b, idProduct=0002
[ 5.346952] usb usb2: New USB device strings: Mfr=3, Product=2, SerialNumber=1
[ 5.346954] usb usb2: Product: EHCI Host Controller
[ 5.346956] usb usb2: Manufacturer: Linux 3.10.0-693.el7.x86_64 ehci_hcd
[ 5.346959] usb usb2: SerialNumber: 0000:00:1d.0
[ 5.347844] usb usb3: New USB device found, idVendor=1d6b, idProduct=0001
[ 5.347857] usb usb3: New USB device strings: Mfr=3, Product=2, SerialNumber=1
[ 5.347859] usb usb3: Product: UHCI Host Controller
[ 5.347862] usb usb3: Manufacturer: Linux 3.10.0-693.el7.x86_64 uhci_hcd
[ 5.347864] usb usb3: SerialNumber: 0000:01:00.4
[ 5.348454] usbcore: registered new interface driver usbserial
[ 5.348465] usbcore: registered new interface driver usbserial_generic
[ 5.348475] usbserial: USB Serial support registered for generic
[ 5.637865] usb 1-1: new high-speed USB device number 2 using ehci-pci
[ 5.648863] usb 2-1: new high-speed USB device number 2 using ehci-pci
[ 5.752239] usb 1-1: New USB device found, idVendor=8087, idProduct=0024
[ 5.752243] usb 1-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0
[ 5.763238] usb 2-1: New USB device found, idVendor=8087, idProduct=0024
[ 5.763244] usb 2-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0
[ 5.910216] usbcore: registered new interface driver usbhid
[ 5.910218] usbhid: USB HID core driver
[ 6.031908] usb 1-1.5: new low-speed USB device number 3 using ehci-pci
[ 6.034889] usb 2-1.1: new high-speed USB device number 3 using ehci-pci
[ 6.120714] usb 2-1.1: New USB device found, idVendor=0424, idProduct=2660
[ 6.120717] usb 2-1.1: New USB device strings: Mfr=0, Product=0, SerialNumber=0
[ 6.124270] usb 1-1.5: New USB device found, idVendor=0461, idProduct=4e22
[ 6.124272] usb 1-1.5: New USB device strings: Mfr=1, Product=2, SerialNumber=0
[ 6.124274] usb 1-1.5: Product: USB Optical Mouse
[ 6.124276] usb 1-1.5: Manufacturer: PixArt
[ 6.127793] input: PixArt USB Optical Mouse as /devices/pci0000:00/0000:00:1a.0/usb1/1-1/1-1.5/1-1.5:1.0/input/input1
[ 6.128253] hid-generic 0003:0461:4E22.0001: input,hidraw0: USB HID v1.11 Mouse [PixArt USB Optical Mouse] on usb-0000:00:1a.0-1.5/input0
[ 6.190888] usb 1-1.6: new full-speed USB device number 4 using ehci-pci
[ 6.277905] usb 1-1.6: New USB device found, idVendor=413c, idProduct=2101
[ 6.277912] usb 1-1.6: New USB device strings: Mfr=1, Product=2, SerialNumber=0
[ 6.277915] usb 1-1.6: Product: Dell Smart Card Reader Keyboard
[ 6.277919] usb 1-1.6: Manufacturer: Dell
[ 6.281094] input: Dell Dell Smart Card Reader Keyboard as /devices/pci0000:00/0000:00:1a.0/usb1/1-1/1-1.6/1-1.6:1.0/input/input2
[ 6.332079] hid-generic 0003:413C:2101.0002: input,hidraw1: USB HID v1.11 Keyboard [Dell Dell Smart Card Reader Keyboard] on usb-0000:00:1a.0-1.6/input0
我正在运行 RHEL 7.4。谢谢。
cdrom 驱动器是 Dell 的，看起来它显示在 lsusb 结果中：
LSSB
Bus 002 Device 003: ID 0424:2660 Standard Microsystems Corp. Hub
Bus 002 Device 002: ID 8087:0024 Intel Corp. Integrated Rate Matching Hub
Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 003 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 001 Device 004: ID 413c:2101 Dell Computer Corp. SmartCard Reader Keyboard
Bus 001 Device 047: ID 0461:4e22 Primax Electronics, Ltd
Bus 001 Device 071: ID 413c:9016 Dell Computer Corp.
Bus 001 Device 002: ID 8087:0024 Intel Corp. Integrated Rate Matching Hub
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub