USB HDD is being not recognized

General topics about the EM7075 mediaplayers

Moderators: Joyce, Laura, Eminent-Admin

USB HDD is being not recognized

Postby ochenrad » 17 Oct 2010, 23:04

My EM7075-DTS does not recognize a 500GB hard drive 3.5". Why can it be if another one of the same 500GB but 2.5" has been recognized at once as well as USB stick of 16GB? :shock:
ochenrad
Newbie
 
Posts: 2
Joined: 17 Oct 2010, 21:31

Re: USB HDD is being not recognized

Postby GunSlayer » 21 Oct 2010, 12:29

What type of HDD are you using? Brand/type etc? This device has it's own power supply? The EM7075 does work work with external hard disks, however, most hard disks can not be powered by the single USB port of the EM7075.
Your 16GB memory stick is recognized? Or not?

If not, pull out the power supply from the wall outlet, then plug in the USB device and power on the EM7075 again. It could be it works now. When USB devices are connected, the USB LED on the EM7075 is lit?
GunSlayer
Excellent Forum Supporter
 
Posts: 117
Joined: 10 Mar 2010, 10:51

Re: USB HDD is being not recognized

Postby ochenrad » 26 Oct 2010, 21:07

Sorry, I have just found that it was something wrong with the HDD format. After the reformatting it is being recognized and works properly. :D
ochenrad
Newbie
 
Posts: 2
Joined: 17 Oct 2010, 21:31

Re: USB HDD is being not recognized

Postby OinkGuy » 07 Dec 2010, 11:58

Does the em7075 recognize an IPOD or is there a future plan to do so? It would come in handy to plug it in and play all the media content. Thx in advance
OinkGuy
Newbie
 
Posts: 1
Joined: 07 Dec 2010, 11:54

Re: USB HDD is being not recognized

Postby Alex » 07 Dec 2010, 13:35

The content on the ipod/ipad/iphone is scrambled in such a way that it cannot be read normally by a computer or media player.
You need apple software (itunes) to talk to it. The EM7075 does not support the proprietary format apple chooses to store on your ipod/pad/phone.

Also, the media on your Apple devices (such as purchased&protected mp4 movies) is locked and drm'd and can only be played back on the device you purchased it for.
Even if your EM7080 could access the Apple device, it is not capable of decoding the DRM protection apple uses in media.

On the other hand, it plays all the free formats such as mp3 or mkv which are out there, in high def, with no hassle. :)
Forum rules: viewtopic.php?t=4
Using Mediainfo: viewtopic.php?t=1110
Telnet: viewtopic.php?t=1873
Alex
Forum Goddess
 
Posts: 1799
Joined: 12 Nov 2009, 13:05

Re: USB HDD is being not recognized

Postby Goner » 13 Dec 2010, 01:33

GunSlayer wrote:This device has it's own power supply? The EM7075 does work work with external hard disks, however, most hard disks can not be powered by the single USB port of the EM7075.
Oh great ... could that be the reason why my 2.5" extermal HD does not stream video without stuttering every couple of minutes ?
User avatar
Goner
User
 
Posts: 41
Joined: 17 Nov 2010, 23:56
Location: Rotterdam, Netherlands

Re: USB HDD is being not recognized

Postby MartinHerrman » 09 Jan 2011, 17:08

Some say that this could be true, but I'm not convinced.

What filesystem are you using? (FAT32, NTFS or EXT2/3?)

If FAT or NTFS, do you have the option to reformat to EXT3?
User avatar
MartinHerrman
Forum Supporter
 
Posts: 99
Joined: 08 May 2010, 11:24

Re: USB HDD is being not recognized

Postby Alex » 11 Jan 2011, 10:50

Goner wrote:
GunSlayer wrote:This device has it's own power supply? The EM7075 does work work with external hard disks, however, most hard disks can not be powered by the single USB port of the EM7075.
Oh great ... could that be the reason why my 2.5" extermal HD does not stream video without stuttering every couple of minutes ?


If the disk requires a dual-usb plug, i'd say yes. The EM7075 has one port. The disk requires two. Conclusion: It's not suited for use with the EM7075.
Forum rules: viewtopic.php?t=4
Using Mediainfo: viewtopic.php?t=1110
Telnet: viewtopic.php?t=1873
Alex
Forum Goddess
 
Posts: 1799
Joined: 12 Nov 2009, 13:05

Re: USB HDD is being not recognized

Postby Goner » 31 Jan 2011, 15:00

MartinHerrman wrote:If FAT or NTFS, do you have the option to reformat to EXT3?
I could connect it to a laptop running Ubuntu and format or partition it, I guess ... I've seen that suggested before, would it really help ?
From other replies to my problem I got the impression that the EM7075 just does not supply enough power over the USB port. The same disks runs fine on a single USB plug on a laptop and another media-player.

One of the 2.5" hd's has a connection for an optional external power supply (pretty rare on those devices) ; I found a convertor that fits the specifications, so I'm going to try if that helps ...
User avatar
Goner
User
 
Posts: 41
Joined: 17 Nov 2010, 23:56
Location: Rotterdam, Netherlands

Re: USB HDD is being not recognized

Postby Alex » 31 Jan 2011, 15:35

There's 500mA available to draw from the USB port. That's exactly enough power, as we are required by the USB 2.0 specifications. We can't put more power there, it's not allowed.
Most modern disks are manufactured to stay around or below 500mA, and have one single plug.

If your disk requires more than 500mA, it's not suited for the EM7080 or not following exact specifications, or getting around those specifications by using a double-headed plug, to draw up to 1000mA peak power.
You cannot get around that double headed plug, there is simply not more output power on the port.
Forum rules: viewtopic.php?t=4
Using Mediainfo: viewtopic.php?t=1110
Telnet: viewtopic.php?t=1873
Alex
Forum Goddess
 
Posts: 1799
Joined: 12 Nov 2009, 13:05


Return to EM7075 - General Discussion

Who is online

Users browsing this forum: No registered users and 1 guest