RAW-Device - oninit

Hello Yall's, I'm running on a Sun Ultra Enterprise 1 with Solaris 2.5. Im'm trying to start the Informix Workgroupserver in Release 7.2x on a RAW-Device. I have made: -------- ln -s /dev/rdsk/c0t1d0s6 /dbspaces/rootdbs chown -h informix /dbspaces/rootdbs chgrp -h informix /dbspaces/rootdbs -------- Thereafter I have started oninit -i and the result in "online.log" is: --------- The chunk '/dev/rdsk/c0t1d0s6' must have owner-ID and group-ID set to informix. Informix-OnLine Stopped. mt_shm_remove: WARNING: may not have removed all/correct segments. -------- Here is the appropriate filesystem-data: --------- lrwxrwxrwx 1 informix informix 18 Jul 10 18:46 rootdbs -> /dev/rdsk/c0t1d0s6 lrwxrwsrwx 1 informix informix 67 Jan 28 15:30 c0t1d0s6 -> ../../devices/sbus@1f,0/espdma@e,8400000/esp@e,8800000/sd@1,0:g,raw --------- When I restart the system I found the following messages in the online.log --------- chunk failed sanity check Process exited with return code 1: /bin/sh /bin/sh -c /usr/informix/log_full.sh 3 4 "Chunk is off-line, mirror is active: 5185468." "chunk failed sanity che I/O error, Primary Chunk 'dev/rdsk/c0t1d0s6' -- Offline (sanity) Informix-OnLine Stopped. mt_shm_remove: WARNING: may not have removed all/correct segments --------- What have I done wrong? This was my thousends try! Is anybody there who can help me, I want to change from cooked to raw devices. Thanks a lot