For the migration and preservation processes to function correctly, all system users and groups that were defined in the /etc/group and /etc/passwd files in the original AIX distribution must be redefined.
The following is a list of the minimum that should exist in the /etc/passwd and /etc/group files before installing, updating, or migrating to AIX Version 4.3.
| Group Definitions | |
| /etc/passwd | /etc/group |
| root:!:0:0::/:/ bin/ksh | system:!:0:root |
| daemon:!:1:1::/etc: | staff:!:1: |
| bin:!:2:2::/bin: | bin:!:2:root,bin |
| sys:!:3:3::/usr/sys: | sys:!:3:root,bin,sys |
| adm:!:4:4::/var/adm: | adm:!:4:bin,adm |
| uucp:!:5:5::/usr/lib/uucp: | uucp:!:5:uucp |
| guest:!:100:100::/home/guest | mail:!:6: |
| nobody:!:4294967294:4294967294::/: | security:!:7:root |
| lpd:!:9:4294967294::/: | cron:!:8:root |
| printq:!:9: | |
| audit:!:10:root | |
| ecs:!:28: | |
| nobody:!:4294967294:nobody,lpd | |
| usr:!:100:guest | |