Data lost when copying from My Cloud to External Hard drive

I have a wd green 2TB hard drive connected to WD My Cloud USB 3.0 port.

After I use Linux command cp copy file from my cloud to my WD Green 2TB hard drive,  it report error message like " Suddenly Removal of USB device", then all my data was gone.

I tried disk recovery tools but doesn’t work.

Please help.

smartjx wrote:

I have a wd green 2TB hard drive connected to WD My Cloud USB 3.0 port.

After I use Linux command cp copy file from my cloud to my WD Green 2TB hard drive,  it report error message like " Suddenly Removal of USB device", then all my data was gone.

 

I tried disk recovery tools but doesn’t work.

 

Please help.

That was on SSH? I don’t think WD will help you if so, so you tested if you got the same problem with other drives? It could have been an actual disconnection rather than the command/