whats a cyclic redundancy check? 10 replies

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Guest

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#1 9 years ago

I am trying to install a video game on my computer. (Star Wars: Battle front 1) And about a quarter of the way through installing it tells me that there is a cyclic redundacy check. I know what that means... kinda, but i don't know how, if, I can fix it. So my question is: Can I fix it and if so, How.




Bs|Archaon

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15th March 2006

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#2 9 years ago

Assuming you're installing from the CD there's a few options really:

1) The disc is very dirty. Clean it.

2) The disc is scratched. Try cleaning it, sometimes a good clean works wth scratches as well.

3) Your drive is knackered. Try the disc in another machine.




Goody. VIP Member

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#3 9 years ago

Is it a genuine disc ?




DarkKrucifix7

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26th February 2007

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#4 9 years ago

CRC checks are for Disk integrity, basically they system may think there is an error and checks to see if there are bad sectors....but I only heard of them for HDDs only.

So I echo goody's question.




ConstanceJill

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6th December 2006

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#5 9 years ago

To answer the original question, a CRC is a redundant (^^) calculation made from the values of every bit of a file. If you modify a single bit from the file, there is a very high probability that the result of the calculation will be different, hence why it's a common method used to check whether a file is corrupted ( which is garanteed if the CRC is different ) or *seems not* (the CRC is the same : it's very unlikely to be corrupted, though it still can).




Bs|Archaon

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#6 9 years ago
DarkKrucifix7;4926443CRC checks are for Disk integrity, basically they system may think there is an error and checks to see if there are bad sectors....but I only heard of them for HDDs only.

It happens with optical drives as well.




ConstanceJill

Huh yeah, whatever ^^

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6th December 2006

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#7 9 years ago

I even had such an error trying to open a bitmap off a floppy using Paintbrush, back in the days of Windows 3.1...




Oblivious

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#8 9 years ago

I used the free app linked below recently to recover mp3's from an old dvd that I couldn't access much of through windows (crashes explorer) and would give me a CRC error. I was able to recover 99% of the files.

Perhaps if you're handy with iso's you could recover the file that gives the error and re-build the disk image for install and hopefully your original disk still works to play.

CD repair tool - Recovery Toolbox for CD




*The.Doctor

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25th November 2003

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#9 9 years ago

Every time i've gotten that error its been because of a badly scratched disc.




Guest

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#10 9 years ago

I had this on my Star Wars: Battlefront II Disc 1. I did a lot of research about CRC errors and I fixed it by downloading a tool called CDCheck to recover the files (I really recommend using this one as its the only one that I tried that worked, plus its in a way free with a 30 day full version free trial). I ripped all of the files off the disc to my PC and than burned them to another CD and it installed fine. I now use that backup disc as a replacement for my corrupt disc. There were little burnt spots on my corrupt disc probably from my CD/DVD drive and there's no way to fix it, if you've tried cleaning the disc and it still doesn't work you'll have to Rip the disc content to your computer. It should install right off of the PC if you just copy the files at least that's what I did and than I later burned it to disc.




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