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Fefstool

Tool to manipulate FEFS volumes (Psion Solid State Disk images). Currently only extracts files from FEFS images. (Formerly siboimg.) **MIGRATED TO CODEBERG**

Install / Use

/learn @thelastpsion/Fefstool
About this skill

Quality Score

0/100

Supported Platforms

Universal

README

siboimg

[!IMPORTANT] This project is now hosted at Codeberg: https://codeberg.org/thelastpsion/fefstool

This is the SIBO Image Extractor, designed to extract files from Psion Solid State Disk images. In future it might also build images for copying/burning to SSDs.

THIS IS ALPHA-QUALITY SOFTWARE! It's worked for me, but it might not work for you.

Build

For Linux, BSD, macOS and other POSIX-compliant systems. make

For Windows you will need MinGW and either gcc or clang. Pre-made binaries can be found in releases.

Usage

siboimg _image file_

At the moment the switches don't work so all it does it extract the files to a directory. The directory will be named after the image's embedded name.

Credits

Thanks to Clive DW Feather for his description of the SIBO Flash filesystem. Thanks to Karl for helping me out.

View on GitHub
GitHub Stars9
CategoryDevelopment
Updated5mo ago
Forks1

Languages

C

Security Score

72/100

Audited on Oct 9, 2025

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