Re: [CentOS] USB of ISO image

I copied the 7.7 Everything ISO to a 16G USB device using dd. I mounted /dev/sdb2 and edited grub.cfg for my custom install option. I then ran the command below to re-do the boot menu. the command runs ok - However it did not work.

cd /mnt/usb/EFI/BOOT grub2-mkimage -o bootx64.efi -p /efi/boot -O x86_64-efi \ all_video boot btrfs cat chain \ configfile echo efi_gop efi_uga \ efifwsetup exfat ext2 fat \ gfxterm gfxterm_background gfxterm_menu \ hfsplus iso9660 linux loadenv \ loopback ls lsefi normal ntfs \ part_gpt part_msdos search search_fs_file \ search_fs_uuid search_label test udf usb

I do not see my new menu option.

How do I correctly re-do the grub boot menu on the USB device.

Thanks,

Jerry