Convert 091 to R77

Understanding 091 and r77 file formats

091 files are part of a multi-volume archive, typically created by compression utilities like WinRAR or 7-Zip. The number (091) indicates the sequence of the split archive. These files cannot be opened individually; they are part of a larger set (e.g., .rar, .r00, .r01, ..., .091).

r77 files are also split archive files, commonly associated with the RAR compression format. The 'r77' extension denotes the 78th part of a multi-volume RAR archive (starting from .rar, .r00, .r01, ..., .r77).

How to convert 091 to r77

Direct conversion from .091 to .r77 is not a standard process, as both are simply parts of split archives. If you need to rename or repackage these files, it is usually because you want to reassemble or extract the archive. The best approach is to use a file archiver to extract the contents and then, if needed, re-compress them into a new split archive with the desired naming convention.

Recommended software for handling 091 and r77 files

• WinRAR: The most popular tool for managing multi-part RAR archives. To extract, select the first part (e.g., .rar or .001) and use Extract Here or Extract to.
• 7-Zip: A free alternative that supports both .091 and .r77 files. Right-click the first part and choose 7-Zip → Extract Here.

Steps to repackage extracted files into a new split archive

1. Extract the original archive using WinRAR or 7-Zip.
2. Select the extracted files, right-click, and choose Add to archive... in WinRAR.
3. Set the Archive format to RAR and specify the Split to volumes, size (e.g., 100MB).
4. WinRAR will create new split files with extensions like .rar, .r00, .r01, ..., .r77, depending on the number of parts.

Summary

Both .091 and .r77 are split archive parts, not standalone file formats. Use WinRAR or 7-Zip to extract and, if needed, repackage the files into a new split archive with the desired naming convention.