Boot stops and hangs after Update (SLE12 SP1)

This document (7018777) is provided subject to the disclaimer at the end of this document.

Environment


SUSE Linux Enterprise Server 12 Service Pack 1 (SLES 12 SP1)

Situation

After an update from Kernel 3.12.67-60.64.24 the system does not start up anymore but hangs after loading kernel and initrd. Debug shows an error at

Mounting /sysroot
[FAILED] Failed to mount /sysroot

in the grub commandline there is an entry like

    root=UUID=

for the root device.

Resolution

To boot into the system again replace

    root=UUID=

with

   root=/dev/mapper/insert_here_the_SCSIID_and_if_necessary_partNO_of_root_device

within the grub shell and boot into the system. After booting into the system

adjust the entry for the root Filesystem in

   /etc/fstab

accordingly and set in

/etc/default/grub

   GRUB_DISABLE_LINUX_UUID=true

and then activate the new bootloader settings with

    grub2-mkconfig -o /boot/grub/grub.cfg

the system will boot properly again.

Cause


Disclaimer

This Support Knowledgebase provides a valuable tool for SUSE customers and parties interested in our products and solutions to acquire information, ideas and learn from one another. Materials are provided for informational, personal or non-commercial use within your organization and are presented "AS IS" WITHOUT WARRANTY OF ANY KIND.

  • Document ID:7018777
  • Creation Date: 05-Apr-2017
  • Modified Date:03-Mar-2020
    • SUSE Linux Enterprise Server

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