Centos password for root account

root密碼忘了如何自救

http://serverfault.com/questions/44631/default-centos-linux-password-for-root-account

Start the quemu guest,then

1. On the GRUB menu, press e.
2. Select the second line, press e
3. Append -s after a space
4. Press Enter then b
5. Right click on quemu guest and open console,then type sh-3.2#passwd root
6. Change the password and type init 6 to reboot

其他相關

http://wangchihwei.blogspot.tw/2010/05/centos-root.html

http://wiki.centos.org/zh-tw/TipsAndTricks/BecomingRoot