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Thread: USB HD problems

  1. #1

    USB HD problems

    Hi folks,
    I got myself this great router, and I must say I'm pretty happy with it.
    I've added Oleg's last firmware, and now I try to add an external USB HD. I took one that powers from the USB bus (2.5' laptop type), so I've plugged both plugs in the router (power and data).
    But there's no /dev/disks (and nothing in /dev/sata, either). I've insmod'ed scsi_mod, sd_mod, usb-storage. This is what I get in dmesg when I plug the disc in:
    Code:
    Jan 30 16:19:06 kernel: hub.c: new USB device 01:03.2-2, assigned address 3
    Jan 30 16:19:06 kernel: usb.c: USB device 3 (vend/prod 0x13fd/0x161f) is not claimed by any active driver.
    So where's the problem?

  2. #2
    Join Date
    Nov 2007
    Location
    EU's border...
    Posts
    71
    Hi Radu,
    Probably the router's USB port doesn't provide enough power for your disk model. Try to connect the power cable into a PC or laptop USB port (only for testing purpose), leaving the data cable into the router.
    And look for disk in /dev/discs...

    Good luck!

  3. #3
    Thank you, that worked!
    In other news, i hat to unplug all my USB stuff in order to feed that disk. So I replaced the USB power with a cellphone recharger, but I wonder, does this kind of recharger lasts when being used continuously? (like it doesn't melts of burns?)

  4. #4
    Join Date
    Feb 2007
    Location
    Moscow, Russia
    Posts
    3,805
    it depends... Check with oscilloscope the output of the recharger. If it is DC, then it's OK. If not --- better avoid it. If you can't check --- also better avoid it. On the other hand --- if nothing died yet --- supposedly it's DC, but you are a risky guy

  5. #5
    Join Date
    Nov 2007
    Location
    EU's border...
    Posts
    71
    Usually, cellphone chargers have a label with rated output.
    If yours is rated less than 500 mA it will not last too long.

    But you can find a cheap box (~15 Eur), aluminium made Spire GigaPod VIII - SP105SL(/SK),
    http://www.spirecoolers.com/main/pro...sp?ProdID=601#
    which also support spin-down of HDD after some time of inactivity. And have his own external power supply.

  6. #6
    Thanks for all the tips.
    I finally returned the 2.5' HD and brought a 3.5' HD with external power - guess it's the best choice.

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