Hi, I created the following: https://pharo.manuscript.com/f/cases/21858/Cleanup-remaining-DeprecatedFileS... This is an umbrella issue, please create sub issues for each set of changes. It is better to work step by step. The package DeprecatedFileSystem contains classes that should no longer be used, the most important being FileStream, StandardFileStream and MultiByteFileStream MultiByteBinaryOrTextStream and RWBinaryOrTextStream Alternatives exist by using FileSystem's FileReference as well as File and various new (Zn) streams. Let's all work together to make this real. It is important that the image itself makes correct use of ongoing refactoring efforts. We already took great steps, but there is more work to do. Note that in many cases, using code can and should be simplified, removing ugly hacks where possible. Feel free to discuss any issues on the ML. Sven