How to bypass cyclic redundancy check?

Question

I am trying to copy a sea patrol episode from my Media Centre PC to a Synology DiskStation...the file type is a "dvr-ms", used by Media Centre Recordings.

When I try to copy it, I get an error saying Error: Cyclic Redundancy Check...(Something like that)

I have tried XCOPY in cmd with /c, but that also came up with the error...

1) How can I copy this fully without the error
2) What will bypassing the error do to the playback of the file
3) What can I do to fix it if you cannot bypass it
4) How can I avoid it in the future

Thanks in advance!!!

Answer 1

First, error descriptions that include the phrase "something like that" cause frustration for support people. Without knowing the exact error message, there's no way we can look the error up to find out precisely what it means.



Second, you don't tell us what produced the error. Was it a pop-up window? If so, what title did it have? Or was it a text message on a console?



In any event, your best workaround is to copy the file ignoring the error. Most likely, one block at most of the file data will be damaged, and most media formats can tolerate that. It sounds like you already did that (with XCOPY/C). So the answer to your first question is that you already did that.



The answer to question 2 is to try it and see. It can be disastrous or it can be harmless. (Often when a check fails, it's because the check itself failed and the data is fine.)



As for how you can avoid it in the future, there are quite a few ways. The best way, however, is to keep multiple copies of files you care about.

Answer 2

A cyclic redundancy check (CRC) or polynomial code checksum is a non-secure hash function designed to detect accidental changes to raw computer data, and is commonly used in digital networks and storage devices such as hard disk drives. A CRC-enabled device calculates a short, fixed-length binary sequence, known as the CRC code or just CRC, for each block of data and sends or stores them both together. When a block is read or received the device repeats the calculation; if the new CRC does not match the one calculated earlier, then the block contains a data error and the device may take corrective action such as rereading or requesting the block be sent again, otherwise the data is assumed to be error free (though, in fact, it may contain undetected errors).



but it cant be fix because their is problem in the file that reasons the problem occurs.

Answer 3

There is a new command in win vista and newer sysytems, when i remember it I will edit this answere later ( because now its going to be on my mind untill i remember it ) And have you tried the slash C command wich continues even if there are errors



http://www.computerhope.com/xcopyhlp.htm