Hey Honosuseri, thank you for your answer. Managed to load my hdf with arcbrowser now :)
Where do you find Ransoms hdf-files? I've found a huge torrent for raspberry pie on the arcadepunks website but the file is broken for me when trying go mount it (and I really don't need 128gb worth of files). World be nice to just select the games I want to play.
I could make the files myself but it would be a real time saver to download them if they already are done and I only have to create config-files for them.