Hack Into Linux Kernal

Following is the procedure to reset root password if you are using GRUB as a boot loader:

   1. Select the kernel

   2. Press the e key to edit the entry

   3. Select second line (the line starting with the word kernel)

    4. Press the e key to edit kernel entry so that you can append single user mode

    5. Append the letter S (or word Single) to the end of the (kernel) line

    6.  Press ENTER key

    7. Now press the b key to boot the Linux kernel into single user mode

    8. At prompt type passwd command to reset password:

You need to mount at least / and other partitions:

# mount -t proc proc /proc

# mount -o remount,rw /

Change the root password, enter:

# passwd

Finally reboot system:

# sync

# reboot

My boot loader is LILO

At LILO boot loader type Linux single and press [ENTER] key:

Boot: Linux single

When you get the # prompt you will need to type passwd root to reset password:

# passwd

Reboot system:

# sync
# reboot