boot - Create bootable RedHat iso from folder

I'd like to install RedHat 6.4 (32bits) on a VM. The problem is that I don't have the iso file. Instead, I have access to a folder (standard RedHat folder with subfolders like images, isolinux, etc.)

I can't manage to recreate a bootable iso file from this folder. Each time I tried, VirtualBox say FATAL: no bootable medium found! System halted. I assume that my ISO file is not built correctly (not bootable?).

I think virtualBox is configured correctly (the iso file is set for the virtual CD/DVD).

How I tried to create the ISO file:

• using programs: isoCreator, powerIso


• using command: mkisofs -o genertatedIso.iso /MyRep

Thanks for your help,

Answer

Here an example:

mkisofs -r -R -J -T -v -no-emul-boot -boot-load-size 4 -boot-info-table -V 'my-rhel6.4' -p 'RHEL6.4' -A 'RHEL6.4' -b isolinux/isolinux.bin -c isolinux/boot.cat -o /var/tmp/my-rhel6.4.iso /path-of-your-distro