How to clean the boot/grub/EFI for new install after using a corrupted install media?

tl;dr:
Used a corrupted (SquashFS Errors at the beginning of the install) install media USB A, but the residue from the 1st corrupted install still appearing after switching to another USB B. How to clean it? Thanks

Long version:
So I had Win10 and was trying to install Ubuntu for dual boot. I had a SD card that was used on Nintento Switch, it had a folder “Nitendo” in it. I burned the iso to it with etcher on Win10, and it corrupted my sd card (this is another issue, google “etcher read only windows unrecognized” for other people with the same issue), so I used Rufus to burn again and it seemed fine now with the content viewable in explorer. When I boot with the media, there was the menu that let you choose “Try or install ubuntu”, then either before or after that appeared, there were some quick error lines that include “Nintendo” in it. Afterwards it begins the installation but stuck with errors of “SQUASHFS error … zlib decompression, SQUASHFS error … failed to read block”

So I burned iso to another “never used on Nintendo SD card” with Rufus directly and booted again. But I still got the quick errors with Nintendo before/after the “Try or install” menu and the same SQUASHFS error afterwards.

So it probably cached some corrupted installer inside the boot/grub/EFI/etcetc? How can I make a clean install without affecting the Win10 side?

Thanks