How do I reset my Linux server’s root password?

Reset Root Password

If a root password is forgotten, you can reset it:

  • Reboot the server
  • From the grub boot menu, select the kernel
  • Press the e key to edit the entry
  • Select second line (the line starting with the word kernel)
  • Press the e key to edit kernel entry so that you can append single user mode
  • Append the letter S (or word Single) to the end of the (kernel) line
  • Press ENTER key
  • Now press the b key to boot the Linux kernel into single user mode
  • You may need to mount at least / and other partitions:
mount -t proc proc /proc
mount -o remount,rw /
  • Change the root password, enter:

Finally reboot system: