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IOMega 1 TB External Hard Drive Keeps Turning Off During File Transfer

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October 10, 2013 3:33:16 PM

The external hard drive uses a USB and came with its own power adapter in which I have plugged in. Whenever a transfer is going on with a file larger than 1 GB, the transfer rate slowly decreases and the drive turns itself off and on. I've tried plugging it in a different outlet and a different port on the desktop but the same results take place. What is wrong with it?
a c 122 G Storage
October 10, 2013 7:46:19 PM

Does this happen if the drive is connected to another computer? Try it if you haven't to find out whether it is drive or computer related. Have you tried a different USB cable? I strongly suggest you back up any data stored on this drive as it is possible the drive is failing. I take it that this is a recent problem and the drive performed as expected before this started happening.
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October 10, 2013 7:58:02 PM

kenrivers said:
Does this happen if the drive is connected to another computer? Try it if you haven't to find out whether it is drive or computer related. Have you tried a different USB cable? I strongly suggest you back up any data stored on this drive as it is possible the drive is failing. I take it that this is a recent problem and the drive performed as expected before this started happening.


I just purchased this external harddrive off of ebay yesterday and it came with its original packaging and all its contents. I tried connecting the USB to a laptop and transferring a large file and the transfer speed is significantly slower and also decreases over time. There's no data on the drive so there's nothing to lose.
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a c 122 G Storage
October 10, 2013 9:09:47 PM

I did a Google search and found many others have the same question but haven't found much in the way of a solution, yet. A couple of things I read include it could be powering down and to change this you need to check power management for the USB ports (Control Panel->expand the Universal Serial Bus tree->right click USB Root Hub->Properties->Power Management, uncheck Allow the computer to turn off this device to save power), another was a problem with the controller board inside the external case, and the last one was the drive could be loose inside the case.
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October 11, 2013 9:44:20 PM

I recently dissected and converted the external to an internal hard-drive and hooked it up to a sata cable, but the transfer speeds are even slower now. Is there a need for defragmentation for either drives?
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a c 122 G Storage
October 11, 2013 10:12:06 PM

doodooface said:
I recently dissected and converted the external to an internal hard-drive and hooked it up to a sata cable, but the transfer speeds are even slower now. Is there a need for defragmentation for either drives?


What type of SATA ports do you have on your motherboard (SATA 1, 2 or 3)? If the drive is a SATA 2 drive and is connected to a SATA 1 port you will get slower transfer speeds. You could try defragmenting the drives and see if that helps. You could something like Defraggler (free download from http://www.piriform.com/defraggler) and see how much fragmentation is on each drive.
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October 12, 2013 8:54:01 AM

I believe the incorrect SATA plug might be the case here. The drive itself wouldn't defrag and would always stay at 0% and after running a crystaldisk check its health status came up as bad, so I just decided to send it back and purchase an actual internal harddrive instead. Thank you very much for all your help.
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