Ubuntu: RUN fsck MANUALLY

Neulich beim starten von Ubuntu folgenden Fehler bekommen:

fsck from util-linux 2.26.2
/dev/sda1 contains a file system with errors, check forced.
/dev/sda1: Inodes that were part of a corrupted orphan linked list found.

/dev/sda1: UNEXPECTED INCONSISTENCY; RUN fsck MANUALLY.
(i.e., without -a or -p options)
fsck exited with status code 4
The root filesystem on /dev/sda1 requires a manual fsck

/dev/sda1: UNEXPECTED INCONSISTENCY; RUN fsck MANUALLY. (i.e., without -a or -p options) fsck exited with status code 4 The root filesystem on /dev/sda1 requires a manual fsck

Busybox v1.22.1 (Ubuntu 1:1.22.0-15ubuntu1) built in shell (ash) Enter ‚help‘ for a list of built-in commands.

(initramfs) _

Lösung ist:
fsck auf der genannten Partition aufzurufen:

fsck /dev/sda1

und für alle Fehler Y zu drücken.
Danach neustarten.