Re: Adding external HDD to Raspberry Pi

2014-12-17 Thread Gabor Szabo
I've got this one:
http://www.dynamode.com/english/pages/product/Datacom%20Products/USB%20Products/USB-H40-A2-0.html

when I connected this device to the Raspberry I got these message

Dec 17 13:59:48 pi kernel: [246075.608736] usb 1-1.4: new high-speed USB
device number 112 using dwc_otg

Dec 17 13:59:48 pi kernel: [246075.710412] usb 1-1.4: New USB device found,
idVendor=05e3, idProduct=0608

Dec 17 13:59:48 pi kernel: [246075.710447] usb 1-1.4: New USB device
strings: Mfr=0, Product=1, SerialNumber=0

Dec 17 13:59:48 pi kernel: [246075.710462] usb 1-1.4: Product: USB2.0 Hub

Dec 17 13:59:48 pi kernel: [246075.721467] hub 1-1.4:1.0: USB hub found

Dec 17 13:59:48 pi kernel: [246075.721944] hub 1-1.4:1.0: 4 ports detected


When I connected the HD to it  the syslog was filled with this message:
hub 1-1:1.0: over-current change on port 2

but I still could not see it using sudo fdisk -l

Gabor
___
Linux-il mailing list
Linux-il@cs.huji.ac.il
http://mailman.cs.huji.ac.il/mailman/listinfo/linux-il


Re: Adding external HDD to Raspberry Pi

2014-12-17 Thread geoffrey mendelson

On 12/17/2014 4:03 PM, Gabor Szabo wrote:

I've got this one:
http://www.dynamode.com/english/pages/product/Datacom%20Products/USB%20Products/USB-H40-A2-0.html

Is it plugged into the wall? If you don't use an external power source, 
it is in passive mode, which means the overhead of the hub, and all of 
the devices plugged into it can not be more than what the port supplies. 
I don't know what the Pi supplies, but the official standard is 500ma 
for USB 1 and 2.


If you plug it in, it will support the full 500ma (possibly more) to 
each device.


Since it is a 4 port hub, you want a 2000ma (2 ampere) supply.

Personally, I prefer the Apple 12 watt chargers as they really do supply 
slightly more than 2 amps without burning up. They are expensive, but 
IMHO worth it.


Geoff.

--
Geoffrey S. Mendelson 4X1GM/N3OWJ
Jerusalem Israel.


___
Linux-il mailing list
Linux-il@cs.huji.ac.il
http://mailman.cs.huji.ac.il/mailman/listinfo/linux-il


Re: Adding external HDD to Raspberry Pi

2014-12-17 Thread Moish



On 17/12/2014 16:03, Gabor Szabo wrote:

I've got this one:
http://www.dynamode.com/english/pages/product/Datacom%20Products/USB%20Products/USB-H40-A2-0.html

when I connected this device to the Raspberry I got these message

Dec 17 13:59:48 pi kernel: [246075.608736] usb 1-1.4: new high-speed USB
device number 112 using dwc_otg

Dec 17 13:59:48 pi kernel: [246075.710412] usb 1-1.4: New USB device
found, idVendor=05e3, idProduct=0608

Dec 17 13:59:48 pi kernel: [246075.710447] usb 1-1.4: New USB device
strings: Mfr=0, Product=1, SerialNumber=0

Dec 17 13:59:48 pi kernel: [246075.710462] usb 1-1.4: Product: USB2.0 Hub

Dec 17 13:59:48 pi kernel: [246075.721467] hub 1-1.4:1.0: USB hub found

Dec 17 13:59:48 pi kernel: [246075.721944] hub 1-1.4:1.0: 4 ports detected


When I connected the HD to it the syslog was filled with this message:

hub 1-1:1.0: over-current change on port 2

but I still could not see it using sudo fdisk -l

Gabor



It will work only with low energy consumption devices.
See previous messages regarding usb hubs with external power supply.
Moish

___
Linux-il mailing list
Linux-il@cs.huji.ac.il
http://mailman.cs.huji.ac.il/mailman/listinfo/linux-il


Re: Image (ddrescue / dd) windows phone 8X?

2014-12-17 Thread vordoo

  
  
On 12/15/2014 01:41 AM, E.S. Rosenberg
  wrote:


  

  

  I think you're on the wrong mailing list ;)
  
  XDA may be able to help you

  

  

Been there  all over the place:
http://forum.xda-developers.com/windows-phone-8/help/image-ddrescue-dd-ghost-windows-phone-8x-t2961300
http://www.reddit.com/r/windowsphone/comments/2o6akd/image_ddrescue_dd_ghost_windows_phone_8x/
http://www.reddit.com/r/sysadmin/comments/2numjo/image_ddrescue_dd_ghost_windows_phone_8x/
:-)

  

  In general the phones try to protect their memory from
direct access so that the whole 2 OS accessing the same FS
at the same time and stepping on each other is avoided (back
in the symbian days it used to unmount the memory card in
the phone while it allowed the computer to access it,
nowadays MTP is usually used to allow the storage to remain
in complete control of the phone).

  
  If you aren't afraid of opening your phone and soldering you
  will probably find it has debug ports/jtag which would allow
  you to dump the contents of the memory, there may also be a
  recovery mode...

  

Will be happy to --open solder, if only I can find how the jtag (or
whatever) works on this phone. I have been told that it may be
encrypted by default.


Thanks!

  


___
Linux-il mailing list
Linux-il@cs.huji.ac.il
http://mailman.cs.huji.ac.il/mailman/listinfo/linux-il