To mount an cd-image in daemontools, you need a cue file. Unfortunately,if you have an iso, you can’t just copy another cue file and change thefile name. But you can make it work by changing something else as well. See the following example.cue:
FILE "EXAMPLE.BIN" BINARY
TRACK 01 MODE1/2352
INDEX 01 00:00:00
This is what programs like Nero produce (or so I heard). If you have an iso, this file is usually stored in a different format. I think it has something to do with storing the extra crc bits. That sure explains the difference in size in the second example.cue:
FILE "EXAMPLE.ISO" BINARY
TRACK 01 MODE1/2048
INDEX 01 00:00:00
Note that it doesn’t matter how the file is called, the only effective difference is the size after “MODE1″.