I looked at the usb-boot.txt file and code included in RonR's usb-boot.zip archive, and I came away a bit unsure of exactly what usb-boot will be doing when I run it.
Background: I am brand new to the Raspberry Pi environment. I received an SD card with my Pi model 4B that has Noobs on it. I ran Noobs to set up an initial Operating system on my SD card, which works great. I want to keep the SD card just as it is.
As I understand it, the Noobs partition installed on the SD card is mucking up the USB boot capability on the Pi 4B when I try to use the "SD Card Copier" accessory that comes with the PI to create a USB bootable flash drive. That's why I'm hoping usb-boot can help.
Reading the usb-boot.txt description, two things are unclear to me:
(1) Will usb-boot modify my SD card in any way? I don't want a single bit to change on the SD card. My goal is just to make a bootable USB flash drive from the post-Noobs initialized OS that now resides on my SD card.
(2) Will Noobs be skipped in the copy process from the SD card to the bootable USB flash drive?
I'm hoping the usb-boot copy process removes any trace of Noobs from the newly created USB flash drive.
Can anyone clarify these two points, even better, RonR himself?