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Usb Hard disk could not be detected

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6 replies

by h_k_dubey

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I purchased moeserbaer external hard disk. I fixed it to my USB port but it didnot detect then I tested with adifferent computer it detected. I changed the hard disk and brought other company hard disk the same thing was also there too but it detected Transcend Hard disk. Both the computers have Xp Sp 2. I formated my computer reinstalled also but it is not working it asks for driver from where I can get it? Please email me at h_k_dubey@yahoo.co.in .

6 replies

by rob miners

your Chipset and USB drivers from your Motherboard CD.

Most External USB HDD devices are delivered with two cables (a Data cable and an addtitional USB Power cable). If you encounter problems, please use both the Data and Power cable.
If the External USB HDD devices still fails please connect it to a self-powered USB Hub.
Most problems on an External USB HDD devices are caused by a too high power consumption during initalisation or data transfer. The USB specification for a USB port is 500mA per port. If a device needs more then 500mA, the USB port may be switched off by the over current circuit.

To avoid too high power consumption on the used USB port, please connect the External USB HDD device to a second USB port with the additional Power cable . This provides up to 1000mA to the USB device. If the device still fails, please try a self-powered USB Hub, as they are, in most cases, able to provide more than 500mA per USB port.

If all this fails, you may have to check if the USB ports are Ok (i.e. possible Hardware failure). To check the USB port, please connect a generic USB device like a USB mouse. If the USB port is Ok, there may be an incompatiblity between the notebook and the used External USB HDD Device. If so, please try a different device or one from another vendor.

by h_k_dubey

The USB port is working well with oyher devices. Such as pen Drive MOuse and my Digital camera. I dont think there is any problemwith the USB port. The drive is self powered needs only USB cable but it has got aseparate power in but from where shall I give the power to the input I have been supplied with only one USB cable

by older mycroft

I only ask because from what I can tell, the Moserbaer external hard drive enclosure uses a twin USB system for drawing power to run the 120GB hard drive.

It may well be that the laptop cannot provide sufficient power for a drive of this size, yet when you connect this drive to an alternative (desktop ?) computer, there is sufficient power to run it.

We would really need more details regarding the 2 computers that you speak of. What is each computer? Make and model of each would help.

I'd also advise that you remove your email address from your initial post otherwise you run the risk of receiving a deluge of SPAM into your email within a very short period of time. :)

by h_k_dubey

Both the computers are desktop one is Zenith celeron and oher one is pentium 4. Both have intel mother board.

by ic-it

You may need to open it and assign a drive letter to the drive.
Otherwise as others have stated it may be a power issue.

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