請問USB flash的問題

[whahahaha]

Broadcom的主版kernel run起來的時候，訊息有秀出：
...
SCSI subsystem initialized
usbcore: registered new driver hub
....
ehci_hcd 0000:00:0a.0: irq 15, pci mem b0001500
ehci_hcd 0000:00:0a.0: new USB bus registered, assigned bus number 1
PCI: cache line size of 16 is not supported by device 0000:00:0a.0
ehci_hcd 0000:00:0a.0: USB f.f enabled, EHCI 1.00, driver 2004-May-10
ohci_hcd: 2004 Feb 02 USB 1.1 'Open' Host Controller (OHCI) Driver (PCI)
ohci_hcd: block sizes: ed 64 td 64
PCI: Enabling device 0000:00:09.0 (0000 -> 0002)
ohci_hcd 0000:00:09.0: OHCI Host Controller
....
....
usbcore: registered new driver usblp
drivers/usb/class/usblp.c: v0.13: USB Printer Device Class driver
Initializing USB Mass Storage driver...
usbcore: registered new driver usb-storage
USB Mass Storage support registered.
.....
...
由kernel的訊息是 USB core, UHCI controller, OHCI controller 和 USB storage 的driver都掛起來了，但是我插了USB flash 隨身碟上去，在 /dev/下沒有看到 sd* 檔案的掛載，在
/proc/bus/下也只有PCI沒有USB的資料夾，沒辦法檢視/proc/bus/usb/devices這個檔案...
請問一下各位先進，
還有哪些地方可以用來檢視，或是驗證現在USB問題發生在何處？？
哪裡還有資訊可以驗證現在的USB core 或是 USB controller (OHCI,EHCI)是否work正常？

[阿信]

不曉得你的系統是否有sd_mod這個模組，沒有的話，是不會有sd*的device node