Thank you for your help,
I'm reading about mksysb and NIM.
However, fortunately, I have another account can login, and I used "su -c 'vi /etc/passwd' " to solve my problem.
However, that's a lucky...
Hi, yesterday, I changed root's shell in /etc/passwd, cause a mistake then I can not log in root account (can't find correct shell). I attempted to log in single-mode, however, it prompted for...