QuickPar
 QuickPar 0.9 checking a series of RAR files for integrity. | |
| Developer(s) | Peter Clements |
|---|---|
| Initial release | 0.1, (February 5, 2003)[1] |
| Stable release | 0.9.1
/ July 4, 2004[2] |
| Operating system | Microsoft Windows |
| Platform | x86 |
| Type | Data recovery |
| License | Proprietary, Freeware |
| Website | www.quickpar.org.uk |
QuickPar is a computer program that creates parchives used as verification and recovery information for a file or group of files, and uses the recovery information, if available, to attempt to reconstruct the originals from the damaged files and the PAR volumes.
Designed for the Microsoft Windows operating system, it is often used to recover damaged or missing files that have been downloaded through Usenet.[3] QuickPar may also be used under Linux via Wine.[4]
There are two main versions of PAR files: PAR and PAR2. The PAR2 file format lifts many of its previous restrictions.[5]QuickPar is freeware but not open source. It uses the Reed-Solomon error correction algorithm internally to create the error correcting information.
Recurse subfolders
QuickPar is unable to recurse subfolders so it can only make a single parchive for the files in one folder. MultiPar is purportedly able to recurse subfolders [1][2], although one user warns that "phpar2 also has problems with large amounts of data" on 2009-06-17 [3] (see "Could not allocate output buffer").
"Could not allocate output buffer"
Some users received the error "Failed: Could not allocate output buffer". The developer writes, "Having too much memory available could potentially be a problem if you are creating a large output set as QuickPar will attempt to allocate a large chunk of that memory to do allow it to create the entire set of output data in one go. If windows then refuses to allocate such a large chunk of memory, QuickPar will fail with the "could not allocate output buffer" error." [4] As of May 27, 2010 (versions 0.8.0 and 0.9.1) this bug has not been fixed [5].
There is a workaround for this.
1. Start Quickpar and click the button 'Options'
2. Select in the left: 'Integrate QuickPar into shell'
3. Press the OK button and close QuickPar.
4. Go with the Windows Explorer (or a other program) to the directory where the files are you want to make PAR2 files for.
5. Select them all using CTRL+A
6. Then press the right mouse button and select 'QuickPar' -> 'Make Recovery Files'
QuickPar will open and you can select how you want the PAR2 files to be made.
Hit the 'Create' button and QuickPar will make the PAR2 files without getting the buffer error.
See also
References
- ^ "QuickPar - Old Release Notes". Retrieved 2010-11-19.
- ^ "QuickPar for Windows". Retrieved 2009-09-27.
- ^ Wang, Wallace (2004-10-25). "Finding movies (or TV shows): Recovering missing RAR files with PAR and PAR2 files". Steal this File Sharing Book (1st ed.). San Francisco, California: No Starch Press. pp. 164 – , 167. ISBN 1-59327-050-X. Retrieved 2009-09-24.
- ^ Petersen, Richard (2009-05-01). "Internet Applications". Ubuntu 9.04 Desktop Handbook. Los Angeles, California: Surfing Turtle Press. p. 224. ISBN 0-9820998-4-3. Retrieved 2009-09-27.
- ^ "QuickPar - About PAR2". Retrieved 2009-09-27.
External links
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