I've also noticed that AMD chipset motherboards have this problem as well. I only have a problem with large files copy to external HD's on one computer at the shop and it is a AMD system. Although, I have no problems with the nVidia intel based motherboards.
I do not know if the OP has stated if it is an USB 2 or USB 3 HD. If USB 2 it could be that he should try another port, same if it is USB 3 :) It may fix the problem. I do not have problems on the Intel machines with Windows 7 64 bit or Windows 8 64 bit. I copy images and backup files that are in upwards to 200GB each with no problems. Also, note all motherboards are Asus (except for Dell machine used for Data Checks). On July 28, 2013 at 3:07 PM Steve Tomporowski <didym...@gmail.com> wrote: > It seems to be a known issue with Win7: > > http://social.technet.microsoft.com/Forums/windows/en-US/8a0ac171-7bd1-4b8d-8e93-c3b05f969255/windows-7-64-bit-usb-external-hard-drives-lose-its-connection-and-stops-working > > Steve > > On 7/28/2013 6:01 PM, Bobby Heid wrote: > > Hey, > > > > > > > > I have a 3TB WD external USB 2.0 drive. When I try to copy large files > > (~50GB), the pc loses the connection and the copy fails after 15-20GB. > > > > > > > > Any idea as to what causes this or how to correct the issue? > > > > > > > > The drive seems to work normally except for this. > > > > > > > > Thanks, > > > > Bobby > > > Tim Lider Sr. Data Recovery Specialist Advanced Data Solutions, LLC http://www.adv-data.com timli...@adv-data.com
