Does anybody know how to change the Scroll Back Buffer of the UEFI shell on the fly?
Or maybe you know how to put the output of a command in pages?
I know you can do this on a shell or a ssh connection like with Putty.
But not sure this can be done in the BIOS Setup screen if this is what you are asking for.
That being said here is what I searched for in Google
how to adjust the uefi scrollback buffer size
Not sure about buffer, but if you got more output on screen than you can read, try “page up” key
Some commands/apps have a -b option, that will pause once the screen is filled for you to read.
Check out How to Use UEFI Interactive Shell and Its Common Commands for these hints and more
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I’d still like to know how to do it but the help -b option is good enough for now. 
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