Warning
Not all ISO are isohybrid ! However you can create isohybrid ISO. If you use very old hardware and rare, may not support isohybrid. Isohybrid created for UEFI should work with "Legacy mode", without support UEFI not will work on UEFI. Before use USB stick check Bios/UEFI settings, USB should start first. If isohybrid not working for you with uefi, try create isohybrid for own use without this option.