How to protect your archives against damage with WinRAR?

by Sophi On April 7, 2009 | Software Development | Hits: 51

Software you need: WinRAR

The RAR archive format supports a special type of redundant information called a recovery record.If an archive has a recovery record, it can be repaired even in the case of physical data damage due to floppy disk failure or data losses of any other kind.

To add the recovery record to an archive:

* In the RAR graphical user interface you may set the "Put recovery record" option in the Archive name and parameters dialog to add the recovery record to an archive.

Another way is to set the "Put recovery record" option in the default compression profile. In this case a recovery record will be added to the archives after any archive modification.

* To add a recovery record from the command line mode you may use switch -rr[N] together with any command, which creates or modifies an archive, or command "rr[N]" to add the recovery record to an existing archive.

To specify the recovery record size in percent to the archive size:

* In the RAR graphical user interface you may set it either by using the Protect archive command or by setting the recovery record size in the Advanced options of the Archive name and parameters dialog.

* In the command line mode just append the percent character to the command parameter.

The recovery record increases the size of an archive. The size of the recovery record may be approximately determined by the formula:

/256 + *512 bytes.

Tags: protect WinRAR archive, WinRaR archive

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