Help with par file repairing.

[UCA007]

I've used usenet a fair bit so I know my way around, but recently I've run into a problem. I've been downloading a shitton of stuff from alt.binaries.e-book.technical (which is my favorite group ever btw), and what happens is that people will post a clump of generally unrelated files, and then post PARs for them. That's all well and good, but my problem is this:

Say there's a group of files, call them A, B, C, D, E. Now, I want file C, but none of the others. I download file C and it has bad parts. I get the PAR set, but since the PARs cover all 5 files, I can't just repair file C unless I also have files A, B, D and E. Is there any program that will let me do this? QuickPAR doesn't

I think it's a problem with the mathematics - I know how PARs work and I see how missing the other 4 files would make recovery impossible (even if I had enough replacement blocks to repair the damaged parts of C.) I'm posting in the hopes that one of you other newsgroup-savvy people had a way around this. (I'd like to avoid having to download the other files so as to not waste bandwidth on things that I'm just going to delete anyway.)



***EDIT Solved my own problem. Thanks.

[stinkiest]

Now that you've solved the problem could you share the solution? Thanks.

[UCA007]

Yes, there is no app that can repair the file w/out downloading the whole set of files. So, I HAVE to download the complete files with the par files to do a recovery.

[geen]

Yes, there is no app that can repair the file w/out downloading the whole set of files. So, I HAVE to download the complete files with the par files to do a recovery.

So there is no solution, just as i thought. Maybe its time some genuis come up with par3 :yup:

[pickedlast]

par allows u to recover a defined % of the original files, which i think people use <15% in general on usenet. so if ur missing ABDE, u would need enough pars to recover 80%, plus the missing pieces of C :)