Cyclic Redundancy Error - Tips and Fixes
A
cyclic redundancy error message usually occurs when your CD or
CD drive is trying to read or copy data from a CD or DVD, you
might find the drive will whir and click away for a few minutes
as it struggles to read the disk before finally give you a DVD
or CD read error.
The actual error itself
usually means one of four things.
1. The file itself is corrupt.
2. Or as in most cases the actual CD or DVD has a problem
such as a scratch over the area you’re trying to copy from
causing the problem.
3. The CD/DVD drive itself
4. Disk read speed is too high
The cyclic redundancy error or CRC as it’s is commonly known can
usually be repaired one way or another.
1. Corrupt File
- Perhaps the hardest type of cyclic redundancy error to fix is
a corrupt file, this can happen if the file was not copied
properly onto the disk, caused either by a CD write problem, the
writing process is terminated or the file was corrupt to begin
with.
2. Disk Scratches
- The most common reason for a cyclic redundancy error is a disk
with a surface scratch preventing the CD or DVD drives laser
from being able to see through the surface of the disk causing a
DVD or CD read error, different drives seem to offer different
tolerances when it comes to scratches on disk, and you might
find one drive may read the disk and another may not.
Personally I’ve found newer drives to be less tolerant to
scratches whereas older and slower drives seem to be more
resilient to this.
If you look at the disk and find that it does
have scratches there are a number of ways to actually make the
scratch or scratches smaller which may then allow the drives
laser to see through the scratch and read the disks data.
3. Dirt and Dust
- Like all electronic components CD & DVD drives do attract dust
as it’s drawn into the computer via any fans. Any dust getting
onto the drives laser can easily cause a
cyclic redundancy error so it’s worth cleaning
the drive every so often with a standard DVD player cleaning
disk.
4. Read Speed too High
– As the speed of drives has got faster and faster drives have
become less tolerant to even the smallest of scratches in many
cases, if possible it might be worth lowering the read speed of
the drive when encountering any cyclic redundancy errors .
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