I have explained the concept of par files before. In short, they can be used to repair any rar file that is part of the archive as long as the blocks of the par file are at least of the same size than the corrupt rar parts. A software like Quickpar can be used to split big files into smaller ones and create several par files to be able to recover the whole archive if part of it gets corrupted.
To use Quickpar you simply add one or more files that you want to split into parts, select a file size for those parts and the amount of Recovery blocks that can be used to recover the archive if files do get corrupted.This is excellent if you want to backup important files, videos or pictures on CD or DVD.
We all know that sometimes those CDs and DVDs become partly unreadable and the created pars can be used to recover the complete archive even though part of it could not be read.
It is possible to alter several other settings before splitting the big file and creating the pars but that is normally not necessary. You could raise the block size for instance. The user could also keep the original file and create pars for it to be able to recover it if put on CD or DVD or transferred over the Internet.
Files can be recovered by clicking on any par file that is created in the process. Quickpar will automatically load the archive and check all files within to see if any are corrupted. If they are it tries to repair those corrupt blocks automatically if enough par blocks exist.
Related posts:
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Play Movies In Rar Archives Without Unpacking
Extract archives from multiple folders at once
