Markus

If your *.img file is a hard disk image, reading single files from it requires random seek access to the image (reading file system headers, directory locations, file metadata, file positions, ...) This means the image file has to be fully unpacked before any individual file contents can be accessed. This is nothing which 7-Zip or any other packer can change. If you regularly need access individual files in hard disk images you need to use a file format which supports it, for example *.squashfs on...

I have a small feature suggestion: When 7-Zip creates a *.sha256 archive, it stores all paths with forward slashes (path/to/file), but other SHA256 tools on Windows often use backslashes (path\to\file). When 7-Zip reads a *.sha256 file created by some other tool, it replaces \ by _ (path_to_file) and fails opening this non-existing file. Could the next 7-Zip version also support reading *.sha256 files created with backslashes? (it's totally fine to write new files with forward slashes since other...