installing qnx 6.1.0


i downloaded the 422MB iso of qnx 6.1.0
booted from it , but there starts no installation
it only says: No qnx 6.1 or graeter partition found to mount

if i use the boot options and tell qnx to force a partition install(F9)
it says: not found finstall

has anybody a hint how i get qnx to install