Gfilui

I recently installed some Plymouth themes by using this command:

sudo apt-get install plymouth-theme-*

Then I changed theme to ubuntu-budgie using this command and selecting the theme:

sudo update-alternatives --config default.plymouth

And then I updated configuration using this command:

sudo update-initramfs -u

And finally I rebooted my system and what I see, it shows me the bootup screen, then automatically reboots the system and then takes me to some black screen prompt mentioned BusyBox and initramfs in it. What should I do now? I can't boot into my system.

Seems that any partition got corrupted somehow. Probably this can solve your problem:

1. There must be some message telling the name of the partition that got corrupted. If not, try executing exit command (when it shows you that screen again, may the message with corrupted partition appear).


2. 
   

   Execute this:

   
   
   

   (initramfs) fsck <name-of-the-partition> -y
   

   
   



3. It'll start checking the partition and after the checking is done, reboot the system by executing reboot.

Done, most are the chances that system will now boot without any errors. Let me know this solves your problem or not.