Okay I've got it - looks like volume_open() currently gets confused when 
trying to open a volume where the block size is not 512 bytes (in the 
case of your CD image it is 4096 bytes). I have now implemented a basic 
dir word (patch to follow shortly) which gives the following output 
against your image:


Welcome to OpenBIOS v1.0 built on Sep 18 2012 15:11

0 > dir cd:2,\
      6148 2012-09-11 13:41:40  .DS_Store
         0 2012-09-11 13:41:20  .fseventsd\
         0 2012-09-11 13:41:20  .HFS+ Private Directory Data?\
         0 2012-09-11 13:42:08  .TemporaryItems\
         0 2012-09-11 13:41:20  .Trashes\
         0 2012-09-11 13:41:40  Folder 1\
         0 2012-09-11 13:41:44  Folder 2\
        29 2012-09-11 13:42:08  readme.txt
         0 2012-09-11 13:41:20  HFS+ Private Data\
 ok
0 > dir cd:2,\.fseventsd
       294 2012-09-11 13:42:57  0000000007c7a66b
        36 2012-09-11 13:41:20  fseventsd-uuid
 ok
0 > dir cd:2,\Folder 1
  (Empty folder)
 ok
0 > dir cd:2,\Folder 2
  (Empty folder)
 ok
0 > dir cd:2,\Folder 3
Unable to locate path \Folder 3 on filesystem
 ok


Note that we don't (yet) do autolocation of partitions which is why the 
cd:2 notation is needed to manually point towards the second partition 
on the CD. Please test and let me know how you get on with your original 
Apple CD.


ATB,

Mark.