Root-Passwort reseten

Quelle

• Boot from boot.iso, choose Troubleshooting > Rescue a system
• Mount the system normally (not read-only), i.e. default, OK

• chroot /mnt/sysimage

• passwd root

• reboot

• Boot with 'init=/bin/bash' argument
  • ListenpunktPress 'e' to start editing.
  • Scroll down to the „linux16…“ or „linuxefi…“ line. This line tells GRUB 2 which kernel to boot.
  • Move to the end of the line. Add the string „init=/bin/bash“ to the end after space.
  • Once you have finished that change, press Ctrl-x to accept the edit, and to boot using that kernel and boot into runlevel 1 (single user mode).

• Run load_policy to load the installed policy file into the kernel.

  • /usr/sbin/load_policy -i

• Remount the root filesystem in read-write mode:

  • mount -o remount,rw /

• Set the new password:

  • passwd root

• Nur bei aktive SELinux

  • touch /.autorelabel

    Wenn Sie das System das nächste Mal neu starten, wird das Dateisystem für SElinux automatisch neu gekennzeichnet.

• Run the exec-command to resume the initialization or reboot.

  • exec /sbin/reboot

    oder

    exec /sbin/init