Ultimate Boot CD

so i asked this already but someone deleted it so il post it again

so computers dont boot off CD/DVD drives anymore so how do you use this in 2022??? none of the bootable USB drive software's will even seen the UBCD.iso ... so you cant boot from rom drive and you cant put it on a USB can anybody help?? i dont know why they dont just chage the files over to work on USB not a DVD since UBCD is bigger then a CD now

• Secondary Machine:
  Download Rufus
  Use Rufus to burn ISO file to USB Disk

Primary/Target Machine:

• If Windows and you want to be able to return to windows later: Get/write down Bit Locker Key if using. (CMD - Elevated: manage-bde).
  Disable drive encryption
  
  Restart PC
  Insert USB
  Go into BIOS during Boot by pressing f2 or f10 or f12 or esc; depending on the manufacturer
  Disable secureboot
  disable bitlocker
  enable legacy boot

Bios/boot manager should see the USB stick as a bootable object.