FM-Towns
The easiest way to modify files on the Harddisk image is to use the
DiskExplorer 1.69.
Additional you have to
download the file called " unztools040103.zip "
Copy the files
unztools\fmimg2\fmimg2.dll
unztools\fmimg2\fmimg2.ini
in the root of the DiskExplorer folder.
Now you can load/read FMT HD images.
If you have a already created .chd Harddisk image you have to first extract the Harddisk image.
Example: chdman -extract TownsOS_HDD260MB.chd TownsOS_HDD260MB.h0
otherwise it is not readable for the DiskExplorer.
To convert back into .chd format :
Example: chdman -createuncomphd TownsOS_HDD260MB.h0 TownsOS_HDD260MB.chd