Tried Brad Powell's attachment (mkshadow) after reading through it. Under SunOS 4.1.2 su failed: / 93 ) su root Password: pwdauth: pseudo-user AUpwdauthd not found in passwd or passwd.adjunct Sorry / 94 ) So I created an entry is passwd and one in security/passwd.adjunct: passwd: AUpwdauthd:##nobody:65533:65533::/:/bin/false passwd.adjunct: AUpwdauthd:*::::: and all worked smoothly afterwards (or apparently so, haven't rebooted yet.) rf