Also many of the list of drive models the partition utilities recognize have a special value in one of the IDE Vendor Specific fields so until Uncle Phil comes up with "CHD gives IDE Features Page" instead of it being hardcoded in idectrl.c there's a limited set of image sizes you can use.
Are you joking? Or did you fail to notice that since March 2009 you can add the ident page to a CHD with: chdman addmeta -i whatever.chd -t IDNT -vf ident.bin
