一个杂牌USB疑难杂症

hylinux

名称: 环宇--移动存储
    3.55'' USB mobile HDD
    Power:5V.12 - 2 A
    USB 2.0的
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cat /proc/partitions
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debian:/home/kenny# cat /proc/partitions
major minor  #blocks  name

   3     0   78184008 hda
   3     1   30724281 hda1
   3     2          1 hda2
   3     5   11863971 hda5
   3     6    2843473 hda6
   3     7   16370203 hda7
   3     8   16378236 hda8
   8    16    3538998 sdb  (已经识别sdb加电应该没有问题)

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hald 守护开启的
kenny@debian:~$ ps -C hald
  PID TTY          TIME CMD
2576 ?        00:00:01 hald
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kenny@debian:~$ lspci -v|grep HCI
00:1f.2 USB Controller: Intel Corporation 82801BA/BAM USB Controller #1 (rev 12) (prog-if 00 [UHCI])
00:1f.4 USB Controller: Intel Corporation 82801BA/BAM USB Controller #1 (rev 12) (prog-if 00 [UHCI])
02:03.0 USB Controller: VIA Technologies, Inc. VT82xxxxx UHCI USB 1.1 Controller (rev 61) (prog-if 00 [UHCI])
        Subsystem: VIA Technologies, Inc. VT82xxxxx UHCI USB 1.1 Controller
02:03.1 USB Controller: VIA Technologies, Inc. VT82xxxxx UHCI USB 1.1 Controller (rev 61) (prog-if 00 [UHCI])
        Subsystem: VIA Technologies, Inc. VT82xxxxx UHCI USB 1.1 Controller
02:03.2 USB Controller: VIA Technologies, Inc. USB 2.0 (rev 63) (prog-if 20 [EHCI])
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debian:/home/kenny# lsusb
Bus 001 Device 003: ID 04cf:8818 Myson Century, Inc. USB2.0 to ATAPI Bridge Controller
Bus 001 Device 001: ID 0000:0000
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usbview 观测的信息:
USB Mass Storage Device
Manufacturer: Myson Century, Inc.
Serial Number: 100
Speed: 480Mb/s (high)
USB Version:  2.00
Device Class: 00(>ifc )
Device Subclass: 00
Device Protocol: 00
Maximum Default Endpoint Size: 64
Number of Configurations: 1
Vendor Id: 04cf
Product Id: 8818
Revision Number: b0.08

Config Number: 1
        Number of Interfaces: 1
        Attributes: c0
        MaxPower Needed:  10mA

        Interface Number: 0
                Name: usb-storage
                Alternate Number: 0
                Class: 08(stor.)
                Sub Class: 05
                Protocol: 50
                Number of Endpoints: 2

                        Endpoint Address: 03
                        Direction: out
                        Attribute: 2
                        Type: Bulk
                        Max Packet Size: 512
                        Interval: 0ms

                        Endpoint Address: 84
                        Direction: in
                        Attribute: 2
                        Type: Bulk
                        Max Packet Size: 512
                        Interval: 0ms
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屡试不行 把modprobe -r uhci_hcd 掉只看 echi_hcd.(ubuntu 里面有个去掉ehci_hcd的办法用了也不济于事，干脆只用echi_hcd)
kenny@debian:~$ lsmod |grep hci
ehci_hcd               32524  0
usbcore               132940  3 ehci_hcd,usb_storage
kenny@debian:~$ lsmod |grep usb
usb_storage            77536  2
scsi_mod              141164  3 sd_mod,usb_storage,libata
usbcore               132940  3 ehci_hcd,usb_storage
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MMD都认出来是sdb了！来个I/O错误./dev里面就找不到。。。
debian:/home/kenny# dmesg |tail
usb 1-4: reset high speed USB device using ehci_hcd and address 3
usb 1-4: reset high speed USB device using ehci_hcd and address 3
usb 1-4: reset high speed USB device using ehci_hcd and address 3
usb 1-4: reset high speed USB device using ehci_hcd and address 3
usb 1-4: reset high speed USB device using ehci_hcd and address 3
usb 1-4: reset high speed USB device using ehci_hcd and address 3
sd 5:0:0:0: [sdb] Result: hostbyte=DID_ABORT driverbyte=DRIVER_OK,SUGGEST_OK
end_request: I/O error, dev sdb, sector 0
Buffer I/O error on device sdb, logical block 0
usb 1-4: reset high speed USB device using ehci_hcd and address 3
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fdisk -l 看不到sdb.
哪位兄弟帮忙看看！折腾几天了，有数据在里面，不能 fdisk 它.
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hylinux

解决方法：螺丝拧开，直接安装到 系统，解决了。。。。...