Pyrogate usb 2.0 drive: not detected

vis · 2008-01-09 17:31:59

I have connected this external "Hi-Speed Business Drive" Pyrogate PX-21 after a very long time (> 1 year). On /var/log/messages I get

Jan  9 18:20:46 mymachine usb 2-2: new full speed USB device using uhci_hcd and address 3
Jan  9 18:20:47 mymachine usb 2-2: new full speed USB device using uhci_hcd and address 4
Jan  9 18:20:47 mymachine usb 2-2: new full speed USB device using uhci_hcd and address 5
Jan  9 18:20:48 mymachne usb 2-2: new full speed USB device using uhci_hcd and address 6

and lsusb says

Bus 004 Device 001: ID 0000:0000  
Bus 003 Device 001: ID 0000:0000  
Bus 002 Device 001: ID 0000:0000  
Bus 001 Device 001: ID 0000:0000

I'm sure I used this drive those days, not sure wheter Arch or Slackware.
What do I need to mount this drive?

Kernel Linux 2.6.23-ARCH #1 SMP PREEMPT Fri Dec 21 19:39:35 UTC 2007 i686

Last edited by vis (2008-01-09 17:35:10)

vis · 2008-01-09 17:46:42

Ony now I checked dmesg. It is full of messages like

usb 2-2: new full speed USB device using uhci_hcd and address 3
usb 2-2: device descriptor read/64, error -71

for addesses 3-10

lilsirecho · 2008-01-09 18:01:39

Is this a usb HDD? If so, it may need external power.

vis · 2008-01-09 18:35:42

Yes, it is an external USB case for a 2.5" HD.

The power may be an issue. But the drive has a two USB-connectors in parallel on the computer side. And I know for sure that it worked with this same notebook about an year ago. Kernel 2.6, can't remember the exact version nor the distribution (Arch or Slackware).

lilsirecho · 2008-01-09 18:44:41

It may be that the power required is supplied by two usb connections which then supplies twice the current of one usb connection.

vis · 2008-01-09 21:09:34

You mean the disk is now going at 10'800 rpm?
:-)

lilsirecho · 2008-01-09 22:04:33

No, not that the speed changes but the power needed to run the drive may exceed the 500 milliamperes of current provided by a single usb connection...therefore a second connection would create 500 milliamperes as well but only the voltage (5v) remains the same and the speed is voltage related.

Most external devices have a power connector for supplying the mains power through a wall wart to supply the 5V for the spin-up at 5400rpm.

Arch Linux

#1 2008-01-09 17:31:59

Pyrogate usb 2.0 drive: not detected

#2 2008-01-09 17:46:42

Re: Pyrogate usb 2.0 drive: not detected

#3 2008-01-09 18:01:39

Re: Pyrogate usb 2.0 drive: not detected

#4 2008-01-09 18:35:42

Re: Pyrogate usb 2.0 drive: not detected

#5 2008-01-09 18:44:41

Re: Pyrogate usb 2.0 drive: not detected

#6 2008-01-09 21:09:34

Re: Pyrogate usb 2.0 drive: not detected

#7 2008-01-09 22:04:33

Re: Pyrogate usb 2.0 drive: not detected

Board footer