Originally Posted by Siddharth Sharma
i m asking for init S or init 1 not for init 5.
when we boot our linux os we can place bootloader password but i wan t to give password on init 1(run level 1) so no one can enter or get access in runlevel 1..
...which you can't, since runlevel 1 is only single user for maintenance/rescue purposes
. And even if you could, it's pointless, since someone can just boot the system with a CD/DVD/USB drive, mount the drive from there, and remove the password from the shadow file.