CPIO is one of the numerous file archivers that were released for the UNIX operating system. It was developed as a utility to facilitate tape backups of files and file systems as single archive files with the .cpio filename extension. It made its appearance on the UNIX platform in 1979 in Version 7 of the operating system. Compression is not supported by the CPIO format by default, however archived files can later be compressed using popular compression utilities such as GZIP.
The .7z filename extension is associated with the 7z compressed file archive format and the open source 7-zip compression utility both developed by Igor Pavlov. The format had its initial release in 1999. It consists of a start header 32 bytes in size which contains the signature and link to the ending header, followed by the compressed data, a metadata block, and finally the end header. 7z supports limited recovery options for 7z archive files which can open but for one reason or another cannot extract due to CRC or other data related errors.
FreeFileConvert uses tuned encoding for CPIO to T7Z conversions, preserving clarity while trimming file size. Finished audio streams instantly across phones, tablets, desktops, and modern browsers without extra tweaks.
Upload CPIO files from desktop, tablet, or cloud storage, queue multiple jobs, and let the converter finish autonomously. Return whenever convenient to download synchronized T7Z results on any device you rely on.
Process up to 5 files sized 1000 MB per batch without splitting queues manually. Mixed-format uploads convert together, producing consistent T7Z audio with dependable progress tracking.
CPIO files are stored to disk as binary files. Meta information is also stored in binary as per the original specification. There have been revisions of the format however that used ASCII character set representation to store Meta information. The format has cross compatibility with the TAR archiving format (allowing you to open TAR archives) and can even recognize different byte-order arrangement of different archiving formats. In the POSIX.1-1988 standard the cpio format has a file limitation of 8 GB.
The 7z compressed archive format was designed to be extensible, to allow it to easily adopt new compression algorithms as they are released. As of writing, the 7z format had support for seven compression algorithms namely LZMA, LZMA2, PPMD, BCJ, BCJ2, BZip2, and DEFLATE. The default algorithm used for compression is LZMA. It is also compatible with the stronger AES-256 encryption algorithm and is capable of compressing file structures of up to 16 Exabyte in size. Filenames can use any characters from the Unicode character set. 7z does not ignore errors found in headers of compressed archives, and as such will not open such archives.
Upload your archive file in the CPIO format from your device, Dropbox, or Google Drive.
Select T7Z as the output format and click Convert. Adjust optional settings if needed.
Download the converted archive file. Each file stays available for up to 5 downloads.