Edit files without full extraction
A practical workflow guide: open a supported .cfs workspace, hydrate the files you need, make supported edits, save them back, and understand compatibility limits.
Arqivexa / Guides
Task-focused documentation
Arqivexa guides organized by what you are trying to do.
Start with the task you have: edit files inside an archive, open a projected Explorer workspace, troubleshoot a .cfs file, understand the editable-archive model, or inspect the Windows and compression technology behind Arqivexa.
01
Use Arqivexa
Practical archive tasks.
Open a .cfs archive as an Explorer folder
See exactly what the projected workspace is, what happens when it opens, how hydration works, and why it is different from mounting a virtual disk.
Open or troubleshoot a .cfs file
Confirm that a file is an Arqivexa archive, check Windows requirements, open it correctly, and diagnose common reasons a .cfs file may not open.
Install Arqivexa on Windows 11
Check system requirements, enable Projected File System when needed, install the supported release, and prepare for the first archive open.
02
Understand the model
Concepts, product fit, and tradeoffs.
What makes an archive editable?
A concept guide to persistent compressed archives: one source-of-truth file, lazy data access, folder-like interaction, and controlled commits.
Where Arqivexa fits as an archive manager
Understand which Windows archive-management tasks Arqivexa handles well and when a traditional multi-format archiver is the better tool.
Arqivexa vs 7-Zip
A direct comparison of Arqivexa's editable Explorer workspace with 7-Zip's mature traditional archive-management approach.
Arqivexa FAQ
Quick answers about editing, Windows support, writable storage, encryption, backups, updates, and installer verification.
03
Technical internals
.cfs storage, ProjFS, and LZMA2.
Arqivexa .cfs file format
Technical details about the retained extension, archive metadata, checksumming, manifests, and current compatibility expectations.
ProjFS archive workflow
How Windows Projected File System lets Arqivexa enumerate directory entries, create placeholders, and provide file data on demand.
LZMA2 compression in Arqivexa
How Arqivexa 0.5 uses independent per-file LZMA2 compression and chunking rather than one solid archive stream.
Security and verification
Checksum verification, current signing behavior, consent-first updates, diagnostics, and the safety boundaries of the 0.5 Stable release.
Current scope
These guides describe Arqivexa 0.5.0 Stable.
The supported release targets Windows 11 x64. Writable archives require local NTFS storage, Explorer mounting uses Windows Projected File System, and Arqivexa does not currently provide archive encryption. Keep independent backups of important data.