Cannot copy file: Data error (cyclic redundancy check).

  • Thread starter Thread starter DesertBabe
  • Start date Start date
D

DesertBabe

While copying files and folders from one computer to another through wireless
network.
 
"DesertBabe" <DesertBabe@discussions.microsoft.com> wrote in message
news:E832F48D-79A3-4D69-BB18-C6069B04AE91@microsoft.com...
> While copying files and folders from one computer to another through
> wireless
> network.

The error means that the files are being corrupted during transfer, or the
source file is corrupt on disk. Cyclic Redundancy Checks (CRCs) are a
data verification tool; a value is calculated from each file as it's being
copied, and compared. If the values don't match, the files don't match
either and the copy fails.


If you're using Explorer to copy a group of files or a folder with multiple
files in it, unfortunately it can be harder to tell where the error is since
it tends to just give up on error. I often use FileSync, from
www.fileware.com , as it will proceed on to other files and make a list of
errors. It won't fix the problem, but often gets at least most of the job
done and helps you figure out what needs to be fixed for the rest of it.

The corruption can be caused by most of the parts used in the transfer,
including the disks, wireless, memory, etc, but you may find that the error
is on the source machine disk. Try copying to a USB key or another folder
on the drive. If this starts failing, you might consider file recovery
options.

If it does work, try temporarily connecting the 2 PCs to the router via
wire. If the copy then works, consider servicing the wireless.

If the source file resides on a CD or DVD, it can mean that the disk or
drive is dirty, misaligned, or failing.

HTH
-pk
 
Thank you so much for your very clear response. I am in the process of doing
a chkdsk /f on the source computer. It has found lots and lots of unreadable
files. It does nothing when completed except tell me that the file
verification is completed. How do I repair these files? file recovery? I
shut off the computer when it didn't do anythin but maybe I should have
waited longer?

"Patrick Keenan" wrote:

> "DesertBabe" <DesertBabe@discussions.microsoft.com> wrote in message
> news:E832F48D-79A3-4D69-BB18-C6069B04AE91@microsoft.com...
> > While copying files and folders from one computer to another through
> > wireless
> > network.
>
> The error means that the files are being corrupted during transfer, or the
> source file is corrupt on disk. Cyclic Redundancy Checks (CRCs) are a
> data verification tool; a value is calculated from each file as it's being
> copied, and compared. If the values don't match, the files don't match
> either and the copy fails.
>
>
> If you're using Explorer to copy a group of files or a folder with multiple
> files in it, unfortunately it can be harder to tell where the error is since
> it tends to just give up on error. I often use FileSync, from
> www.fileware.com , as it will proceed on to other files and make a list of
> errors. It won't fix the problem, but often gets at least most of the job
> done and helps you figure out what needs to be fixed for the rest of it.
>
> The corruption can be caused by most of the parts used in the transfer,
> including the disks, wireless, memory, etc, but you may find that the error
> is on the source machine disk. Try copying to a USB key or another folder
> on the drive. If this starts failing, you might consider file recovery
> options.
>
> If it does work, try temporarily connecting the 2 PCs to the router via
> wire. If the copy then works, consider servicing the wireless.
>
> If the source file resides on a CD or DVD, it can mean that the disk or
> drive is dirty, misaligned, or failing.
>
> HTH
> -pk
>
>
>
 
Back
Top