On Sun, Jul 12, 2015 at 1:11 PM, Jerry Geis geisj@pagestation.com wrote:
I found this http://wiki.centos.org/HowTos/InstallFromUSBkey
So for centos 7 if did the dd command seemed to work great. I did the install.
So now I'd like to "modify" the USB key to add a boot menu option with my customer install options. I mounted /dev/sdb2 and edited the file /mnt/usb/EFI/BOOT/grub.conf
added my menu item and rebooted to try to use it. It does not show up in the menu.
How do I get the USB to use my new menu?
Does the computer have UEFI or BIOS firmware? If BIOS you need to edit the isolinux.cfg, and I'm pretty sure when this is media created by dd, the isolinux.cfg is not on a FAT volume, it's on the ISO 9660 volume which is read only. You'd need to use livecd-iso-to-disk to create the install media, which ought to put both boot loaders on FAT and is thus editable.