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Copying Files to USB on Windows 7

H

hhara

Gawd
Joined
May 8, 2009
Messages
817
Here is the problem. I am trying to copy large files ( > 4 GB) to a USB drive and they will start out at a reasonable speed of roughly 60 mb/s. Then the transfer rate will practically stop and many other applications like firefox or windows explorer will display "not responding" in the title and become unresponsive.

After waiting a minute or so it will pick up again and go at a normal speed. This switch between slow and fast lasts for a while, depending on how big the file is. A 5 GB file can take 30 minutes when copying to a 16 GB flash drive. The flash drive is formatted as NTFS and I am running on Windows 7 64 bit.

When the transfer comes to the crawl and processes lock up, the task manager reports nearly 0% activity of the CPU. I have 4 GB memory and only 3 is being utilized. This computer is practically brand new. The HDD is a WD Caviar Green 1.5 TB and is brand new as well.

Is this a common issue or is something going wrong?

Note: The computer that we are transferring files from is not the one listed in my signature.

Thanks
 
Two things could be affecting transfer speeds. The first is that the speed of the WD Caviar Green is less than 7200RPM (many of us believe that it's about 5400RPM, but WD won't officially announce the actual spindle speed). The other thing is that USB 2.0 flash drives generally max out at around 60MB/s but many of them slow down to around 20MB/s to 30MB/s (and sometimes even slower) while copying or moving large files (of over 250MB).

Those two things may be "working together" and affecting your transfer speeds.
 
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I dont think there is anything wrong. It just that the usb chipset is that good.
For moving large files, I recommend you to do it via usb 3.0.
You can buy a usb 3.0 pci card in newegg for $30 and usb 3.0 dock for around the same price (not too sure about this)
 
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