> you cannot use CHDMAN to 'dump' a CD, you always have to use an external program.
> however, now if you have a dump with proper offsets (i.e. you have used properly the
> external program), these offsets are properly taken into account in the creation of
> the .chd file
Sorry, with dumping, i meant the process of data extraction, not the conversion to CHD. So to speak, previously (still?) adjusting for the proper offset/pregaps etc. was not taken into account for providing a 'proper' dump for MAME.