Hello:
On a CentOS 6 Enterprise 6 server, I can always boot it to single user mode without being asking for root password; until...
I removed a file system but left its mount entry on /etc/fstab. Reboot failed. Reboot again, on GRUB, enter single or 1 to boot into single user mode.
booting...
An error occurred during the file system check,
Dropping you to a shell; the system will reboot when you leave the shell
Warning –SELinux is active
Disabling security enforcement for system recovery
Run ‘setenforce 1’ to reenable
Give root password for maintenance
(or type Control-D to continue):
Login incorrect.

Is it normal that boot (even single user mode) asks for password since it has file system problem ?

2nd issue, somehow console (HP Porliant DL380 G5, iLO Remote Console) only takes one key stroke and immediately rejects.

Any recommendation ?
I boot to Rescue Mode to fix /etc/fstab issue.
Thanks.
Warren

Yes. Even if you rebooted in single-user mode, or entered it via GRUB, it will prompt you for a root password.
No idea...have you contacted HP? The ILO from HP may have a bug, firmware problem, etc. Are you able to use a 'hard' console to access the machine?