Hello Quin,
On Thu, 9 Nov 2000 at 20:14:52 [GMT -0700], you wrote:
QS> Hello TBBETA,
QS> I've used PowerArchiver to extract the RAR files of the last two
QS> betas (1.48b3 and b4). In both cases, I initially got a messages
QS> saying the files had CRC errors in them. I couldn't extract them
QS> except after several attempts. What are CRC errors, why are they
QS> there, and what should be done? Thanks.
Cyclic Redundancy Check is a form of error correction in which a 16
(<= 4Kb data; detecting all single and double-bit errors) or 32 bit
polynomial (> 4Kb data) is applied to the send data, and the receiver
also calculates the polynomial. If they don't match, then the data is
requested to be resent.
It is also used in files where a CRC is applied to the file, and the
software you use to open/view it calculates the CRC and if they
don't match, then you get the error.
If you want to see the nitty-gritty on CRCs, check these out.
http://www.cs.williams.edu/~tom/courses/336/outlines/lect7_2.html
and
http://www.seanet.com/~ksbrown/kmath458.htm
Cheers,
Leif Gregory
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Web Site <http://www.PCWize.com>
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Using The Bat! 1.48 Beta/4 under Windows 98 4.10 Build 2222 A
on a Pentium III 500 MHz notebook with 128MB.
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