Enter XenServer Boot Menu. In the first step, reboot your XenServer into Grub boot menu:

  1. Edit XenServer boot menu entry.
    1. In the first step, reboot your XenServer into Grub boot menu:
      1. Use arrows to locate an appropriate XenServer boot menu entry and press “e”. Doing so you will editing mode.
      2. While in the editing mode locate read-only parameter ro and replace it with rw. Furthermore, locate keyword splash and replace it with init=/bin/bash.
  2. Boot into single mode.
    1. Once you changed the boot menu entry, hit F10 thus you will boot into a single mode:
  3. Reset your root password.
    1. Once you enter into a single mode use passwd command to reset your XenServer’s root password.
  4. Reboot XenServer.
    1. Reboot your system be entering the command exec /usr/sbin/init
  5. New root password
    1. you should now be able to login with your new XenServer password.