Kernel 6.9.5-200.fc40 throws me into grub prompt on reboot

[Frank Bures]

Hi,

I just did a kernel update and after reboot I ended up in a grub prompt.

I booted from USB F40 and followed instructions at

https://docs.fedoraproject.org/en-US/quick-docs/grub2-bootloader/#_restoring...

However, whatever I did I was not able to successfully boot.  I spent hours 
trying to figure it out before trying to boot to the old 6.9.4-200 kernel 
from the dreaded grub prompt and voila, the system happily came on.

My question now is:  How to restore my grub2 reliably so that I would not 
have to go through all these hoops again after next reboot.

Any pointer would be gratefully appreciated :-)

Cheers
Frank