A cyclic redundancy check error or CRC error occurs when the data verification value is a redundancy. This is used in detecting common errors caused by noise in transmission channels.
A Cyclic Redundancy Check for DvDs with protection can easily be overcame. This is a detailed version of how to fix it (its really simple):Cyclic Redundancy Check Error - Data Error While Burning Dvds found at:http://hubpages.com/hub/cyclic-redundancy-check-errorI learned how to do it from there!
cyclic redundancy check .A cyclic redundancy check (CRC) is an error-detecting code designed to detect accidental changes to raw computer data, and is commonly used in digital networks and storage devices such as hard disk drives.
how data errors occur?
Linux seems to have corrected my issues
Synchronous
It depends on what you are doing. The cyclic redundancy check will only detect an error, while the hamming code can also correct many types of errors. However to perform this correction the extra error detection parity bits required in hamming code are many more than the bits needed for cyclic redundancy check, per data byte being checked. Normally cyclic redundancy check is done on large block of data that can be resent or retried to get the correct block of data (e.g. telecommunication channels, disk sectors). Normally hamming code is done on individual bytes or words of computer memory.
This is where Windows cannot read a disk consistently. Windows will first read a bit of data from the disc, copy it, and then check again to make sure that the copy matches the original. If it does not, it tries again. if it still cannot get a consistent reading (after about ten tries), it will throw a "cyclic redundancy error" message.
disk errors - time to buy a new drive
Error detection at data link level is achieved by using a Frame Check Sequence (FCS) method like Parity, Checksum Calculation or Cyclic Redundancy Check (CRC).
This is where Windows cannot read a disk consistently. Windows will first read a bit of data from the disc, copy it, and then check again to make sure that the copy matches the original. If it does not, it tries again. if it still cannot get a consistent reading (after about ten tries), it will throw a "cyclic redundancy error" message.
Bad hard drive. Avoid using the bad sector(s), preferably by purchasing a new drive.