SELinux disabled (disabled) Linux system does not start properly problem __ garbled problem

On their own machines installed virtual machine, and then installed on the above Oracle 11g, after the database installed, Sqlplus not run up, prompted no permissions, so disabled the SELinux, but the restart system error:

Unable to load SELinux Policy. Machine is in enforcing Mode. Halting now.

Kenel panic-not syncing:attempted to kill init!

Can not enter the system, the Internet search, said is a single-user mode to enter the system and then modify the configuration file, but the grub boot parameter followed by a single, no use, start or stop in the original place, and some say rescue mode into the system, has not tried, feel a little trouble, then finally found a solution , start in the grub this step with the e command to edit the start parameters, in the back add selinux=0, finally can enter the system, into find their own real parameters to change the wrong place, should modify the selinux=disabled, but I changed to selinuxtype=disabled, Selinuxtype or change back to the default targeted, the system can also start up normally