If you only need the list of names (useful for scripts), use: 7z l -ba FCH.7z l (List contents of archive) command - 7-Zip manual

These are the actual "chunks" of compressed data. Multiple small files are often grouped into a "solid" block to achieve higher compression.

l (List contents of archive) command. Lists contents of archive. Examples. 7z l archive.zip. lists all files from archive archive. 7zip.bugaco.com 7z - cheat/cheatsheets · GitHub

While it is a standard 7-Zip archive, the "FCH" prefix often indicates it contains or plugin data for the FreeCommander software. Internal Structure of the Archive

Details the specific compression algorithms (like LZMA or LZMA2 ) and encryption settings used for each stream.

Right-click the file and select 7-Zip > Open archive . This lets you browse the folder hierarchy and view file sizes.

Every data stream and header contains a checksum to ensure no data was corrupted. How to View the Detailed Content

A .7z file like FCH.7z uses a highly efficient container format. Internally, it is organized into several key metadata blocks: Validates the file as a 7-Zip archive.

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