Ubuntu while loading initrd error:the initrd is too big unable to boot the machine

Details please:

Did this system boot before?
Was there a change (e.g. package updates or installation of additional programs) that may have caused this?
How much memory does the system have?

Yes this was booting well.
No changes as of my knowledge.
It has 512GB memory.

Does any of the options in grub (e.g. recovery mode - root command prompt) boot successfully?

No none of the options.
Wired is while booting from CD also getting same message.

-----Original Message-----
From: <email address hidden> <email address hidden> On Behalf Of Manfred Hampl
Sent: Wednesday, November 13, 2019 1:53 AM
To: VANIGARI, VENKAT <email address hidden>
Subject: [External] Re: [Question #685799]: Ubuntu while loading initrd error:the initrd is too big unable to boot the machine

Your question #685799 on Ubuntu changed:
https://answers.launchpad.net/ubuntu/+question/685799

    Status: Open => Needs information

Manfred Hampl requested more information:
Does any of the options in grub (e.g. recovery mode - root command
prompt) boot successfully?

--
To answer this request for more information, you can either reply to this email or enter your reply at the following page:
https://answers.launchpad.net/ubuntu/+question/685799

You received this question notification because you asked the question.

Do I understand correctly:

The system has booted successfully in the past, but currently fails booting with "error: the initrd is too big" with all versions of the kernel installed on the hard disk, and also fails booting an installer that has worked previously?

Ideas:
- A Google search tells that in some cases removing "quiet splash" from the boot command line has helped.
- Try booting an Ubuntu 18.04.3 installer (with the 5.0.0 kernel).

Solved