Directory Dir2Dat Guide

todo: document how to use RomVault for this, as that is a much better option

Warning: there currently is no supported dir2dat tool that properly distinguishes between empty files and folders. As a workaround, you should use store the output of `dir /s` (if you are using Windows) or `ls -R` (if you are using Linux) alongside the datfile.

If the “ROM” consists of of multiple directories, you will want to use the “dir2dat” function of clrmamepro with the following settings in the “Options” section.

In other words, make sure only the following boxes are checked in that section:

• Scan Subfolders
• Add MD5
• Add SHA1
• Add 0-File For Empty Folder
• Set-Subfolder Mode
• Keep Archives As Files
• Keep CHDs As ROMs

You can also press the Load button and load this dir2dat config file to achieve the same thing.

Make sure to lay out the data as with the following example.

You can test this setup is working correctly by hashing the contents of this zip and comparing the datfile that clrmamepro creates with this pre-made datfile . Currently there is no solid solution for “directory hashing” that supports SHA256, so you can leave that hash type out.

There will also be a top-level entry called “Default” with a single empty folder, which should be ignored/deleted.