Geekzone: technology news, blogs, forums
Guest
Welcome Guest.
You haven't logged in yet. If you don't have an account you can register now.


1760 posts

Uber Geek
+1 received by user: 126


Topic # 92461 30-Oct-2011 08:46
Send private message

I have encountered an odd problem.

I have two external hard drives, both 2.5inch but one is IDE (20GB) and the other SATA (120GB).  Both work fine when cabled to my desktop or laptop.

However, when using a TV media player (NBox), only one drive is recognised by the player unit ... being the IDE drive.

Any ideas why the other drive will not show up? 

I thought that power ratings might be the problem, but then the IDE is 5 volts and the SATA 3.3v, so the mains connected media player should handle that OK?  Both are NTFS and seem the same other than size and brand of casing.

R.

Create new topic
2627 posts

Uber Geek
+1 received by user: 502


  Reply # 539195 30-Oct-2011 08:57
Send private message

Do both or either of the units have an external power supply?
Could be the TV cant supply enough power via USB to power the drive???
It wouldnt be the voltage - USB always supplies 5v.
The wattage may not be enough on a low powered USB port to actually power a device though. 
It would be enough for memory sticks and maybe a very low power consumption disk drive - but the lerger drive probably needs an external power supply connected.




Nothing is impossible for the man who doesn't have to do it himself - A. H. Weiler



1760 posts

Uber Geek
+1 received by user: 126


  Reply # 539200 30-Oct-2011 09:05
Send private message

Morning Rob,

Ironically, the IDE drive case has a power inlet, but I've never used it since the USB cable delivers enough for it to work. The SATA is pure USB cable driven.

Would the capacity of each drive have such a dramatic effect in this way ... they are afterall the same size platters, surfaces etc? Then again maybe the heads and electronics for the larger capacity drive work harder and need more power?

R.

2627 posts

Uber Geek
+1 received by user: 502


  Reply # 539202 30-Oct-2011 09:09
Send private message

See if you can find out which device draws the most current. Id still guess that its that.

Do you have more than one USB port on the TV?

You could try one of those USB cables that has 2 plugs on one end and one on the other:
see http://wiki.answers.com/Q/Connecting_a_double_usb_cable_to_a_laptop
They look like this:
http://www.insidesocal.com/click/toshiba_usb_drive_with_double_USB_cable_550.jpg

You plug the 2 USB plugs on one end into 2 USB ports to get the juice from 2 USB ports

You can also buy "USB powered hubs" if power is the issue (put that into DSE.co.nz search and you will see what I mean). Most PC shops will probably have something like that available as well.




Nothing is impossible for the man who doesn't have to do it himself - A. H. Weiler



1760 posts

Uber Geek
+1 received by user: 126


  Reply # 539205 30-Oct-2011 09:21
Send private message

Rob,

Not using USB port on the TV, using an intermediate media player (so that I can display videos, pictures etc) on the TV via composite cabling.

Yes, I have the Y-shaped USB cables, but of course the media player has only one USB port.

I'm about to run the SATA drive out of its case using a powered adaptor ... I gues that will prove something .

R.



1760 posts

Uber Geek
+1 received by user: 126


  Reply # 539219 30-Oct-2011 10:11
Send private message

UPDATE:

Removed SATA drive from casing and connected to a powered adaptor. Connected to the media player and away it went with no problems at all.

So, short answer is that the bigger capacity drive needed more power than the media player could deliver.

I wonder what the maximum drive size is before a single USB cable won't hack it?

R.

2627 posts

Uber Geek
+1 received by user: 502


  Reply # 539249 30-Oct-2011 12:08
Send private message

I think the general rule of thumb is that anything larger than a USB flash drive - ie a hard drive should probably have an external power supply - guess some of the smaller laptop drive based ones might get enough power from a USB port - but dont count on it....




Nothing is impossible for the man who doesn't have to do it himself - A. H. Weiler

Create new topic

Twitter »

Follow us to receive Twitter updates when new discussions are posted in our forums:



Follow us to receive Twitter updates when news items and blogs are posted in our frontpage:



Follow us to receive Twitter updates when tech item prices are listed in our price comparison site:





News »

N4L helping TAKA Trust bridge the digital divide for Lower Hutt students
Posted 18-Jun-2018 13:08


Winners Announced for 2018 CIO Awards
Posted 18-Jun-2018 13:03


Logitech Rally sets new standard for USB-connected video conference cameras
Posted 18-Jun-2018 09:27


Russell Stanners steps down as Vodafone NZ CEO
Posted 12-Jun-2018 09:13


Intergen recognised as 2018 Microsoft Country Partner of the Year for New Zealand
Posted 12-Jun-2018 08:00


Finalists Announced For Microsoft NZ Partner Awards
Posted 6-Jun-2018 15:12


Vocus Group and Vodafone announce joint venture to accelerate fibre innovation
Posted 5-Jun-2018 10:52


Kogan.com to launch Kogan Mobile in New Zealand
Posted 4-Jun-2018 14:34


Enable doubles fibre broadband speeds for its most popular wholesale service in Christchurch
Posted 2-Jun-2018 20:07


All or Nothing: New Zealand All Blacks arrives on Amazon Prime Video
Posted 2-Jun-2018 16:21


Innovation Grant, High Tech Awards and new USA office for Kiwi tech company SwipedOn
Posted 1-Jun-2018 20:54


Commerce Commission warns Apple for misleading consumers about their rights
Posted 30-May-2018 13:15


IBM leads Call for Code to use cloud, data, AI, blockchain for natural disaster relief
Posted 25-May-2018 14:12


New FUJIFILM X-T100 aims to do better job than smartphones
Posted 24-May-2018 20:17


Stuff takes 100% ownership of Stuff Fibre
Posted 24-May-2018 19:41



Geekzone Live »

Try automatic live updates from Geekzone directly in your browser, without refreshing the page, with Geekzone Live now.



Are you subscribed to our RSS feed? You can download the latest headlines and summaries from our stories directly to your computer or smartphone by using a feed reader.

Alternatively, you can receive a daily email with Geekzone updates.