Forgotten Ubuntu Root Password

  1. From GRUB, choose Ubuntu Repair Menu—> Choose root—> passwd ‘username’ (or just plain passwd)
  2. Once updated, type reboot

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Cmd Line Root Prompt

  1. OR – type E (for edit) on the Ubuntu Image (in the grub menu) 
  2. Highlight the line that begins kernel ......... or linux ........, press e
  3. Go to the very end of the line and add rw init=/bin/bash
  4. Press Enter, then press b to boot your system. Your system will boot up to a passwordless root shell.1

  5. Now issue the command passwd username *where “username” is the user for which you want to change the password.

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