Booting Failed - How to Start the Services Interactively in RHEL 7 / CentOS 7 | Grub2 Interactive Mode | Failed to Start Crash Recovery Kernel Arming

[FAILED] - Failed to start Crash recovery kernel arming

See - 'systemctl status kdump.service' for more details :

Failed to start Crash recovery kernel arming | Boot problem | Start Linux in Interactive mode

tags : boot failed, interactive mode, interactive on rhel,interactive on centos,

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How to boot RHEL7 with systemd in an interactive mode, boot interactive mode,

linux rescue, linux single user mode, how to start the services interactively,Starting a "login shell" or "interactive shell"

Booting failed after the restarted my CentOS 7. its give me "Control + D" and ask me root password.

When i checked by scroll up the screen, i got below error :

In This topic we will boot centos 7 or rhel 7 in interactive mode by adding a parameter in grub during the system boot.

Step 1

Restart your system and select OS which you want to boot in interactive mode by add parameters,

After he restart/start it will give you a menu to select OS, quick press any to stop auto boot by default menu.

A part from that edit boot menu by press "e" key from the keyboard

Step 2

Locate the line begin with linux

linuxefi /vmlinuz-3.10.0-957.21.3.el7.x86_64 root=/dev/mapper/centos-root ro crashkernel=auto rd.lvm.lv=centos/root rd.lvm.lv=centos/swap rhgb quiet LANG=en_US.UTF-8 net.ifnames=0

Add parameter to boot in interactive mode

We can add  below parameter at the end of line

Add "systemd.confirm_spawn=1" meanwhile we can remove "rhgb quiet" its optional if we want print extra information on the screen. In this tutorial we will remove it.

linuxefi /vmlinuz-3.10.0-957.21.3.el7.x86_64
root=/dev/mapper/centos-root ro crashkernel=auto rd.lvm.lv=centos/root
rd.lvm.lv=centos/swap LANG=en_US.UTF-8 net.ifnames=0 systemd.confirm_spawn=1

Before update the Entry :

After the Update the Entry:

In the bottom we will find some shortcut key like:

Ctrl + x  to start booting

Ctrl + c  for command prompt

Esc  to discard edits and return to the menu

Step 3

To start booting the OS

Press "Ctrl + x"  

Now its asking a confirmation by yes or no, we can give input as per our need

Thanks

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