If you'd like to see the contents of an image, you can use the dumpifs utility. The output from dumpifs might look something like this:
   Offset     Size  Name
        0      100  Startup-header flags1=0x1 flags2=0 paddr_bias=0x80000000
      100     a008  startup.*
     a108       5c  Image-header mountpoint=/
     a164      264  Image-directory
     ----     ----  Root-dirent
     ----       12  usr/lib/ldqnx.so.2 -> /proc/boot/libc.so
     ----        9  dev/console -> /dev/ser1
     a3c8       80  proc/boot/.script
     b000    4a000  proc/boot/procnto
    55000    59000  proc/boot/libc.so.3
     ----        9  proc/boot/libc.so -> libc.so.3
    ae000     7340  proc/boot/devc-ser8250
    b6000     4050  proc/boot/esh
    bb000     4a80  proc/boot/ls
    c0000    14fe0  proc/boot/data1
    d5000     22a0  proc/boot/data2
Checksums: image=0x94b0d37b startup=0xa3aeaf2
The more -v ("verbose") options you specify to dumpifs, the more data you'll see.
For more information on dumpifs, see its entry in the Utilities Reference.