So I am using Rocky Linux 9.3, and I accidentally removed all the kernels using grubby --remove-kernel and restarted the machine, how do I fix it? if rescue mode is an option, please help me out with tips to do it. I really need this to be fixed.
You will have to use a rocky 9 install disk to rescue your system by following the prompts to chroot mount the system. You will also need to find the device that contains /boot and mount that to root “/”. The tool to use to regenerate the entries is “kernel-install”. I spent some time figuring this out on Fedora a while back. Read this post linked below completely as early assumptions were clarified in later posts.
Regenerate BLS Entries