The “Data Error Cyclic Redundancy Check (CRC)” is a problem with the mathematical process the computer does in order to ensure that data is properly transferred from a particular source to a specified destination. During the cyclic redundancy check, the computer determines if the data being transferred is not damaged. When users get a “Data Error Cyclic Redundancy Check” message, this could very well mean that the data they are transferring is corrupted.
Often times, users encounter “Data Error Cyclic Redundancy Check” while attempting to read and/or copy data derived from a CD or a DVD that has been damaged. Prior to the error message, the common indication of a data CRC error is a grinding or whirling sound in the CD drive or the slowing down of the computer. The grinding or whirling sound is a result of the drive’s attempt to read the CD or DVD disc data a number of times. After several unsuccessful tries, the computer will finally display the “Data Error Cyclic Redundancy Check” message.
Another instance when the “Cyclic Redundancy Check” error appears is when users try to access a file they acquired from the Internet that was not properly downloaded. System crashes and applications with numerous bugs also commonly cause this error message.
How Does a Cyclic Redundancy Check Verify Data Integrity?
A term used in place of CRC is “Polynomial code checksum.” It is not a secure means of ensuring that data has not been modified by a malicously acting program or user. Instead, it is used to detect an accidental change to the raw data in the file. The CRC capable device or program will calculate a CRC code for each block of data and store this information with the data. When the reading device or drive goes to load the data, it repeats the calculation based on the data to ensure that the CRC values match. If they do not, then a CRC error will be displayed.
How to Resolve this Error
Users can prevent “Data Error Cyclic Redundancy Check” by performing a set of simple procedures. If a user encounters this error while his/her computer is reading data from a CD or DVD, the first thing to do is to eject the disc and clean its surface with a soft cloth. If the computer tried reading data from different discs and encountered the same error each time, check the disc drive for loose cables or replace the drive itself. Moreover, make sure that the computer has properly downloaded Internet files prior to opening them. This will prevent the “Data Error Cyclic Redundancy Check” message from popping up on the screen. Use various download manager software applications in order to manage and monitor the downloaded files’ status.
Another option is to download a management tool or software program that allows incremental information download, as this gets around connectivity hiccups.