On Fri, 10 Oct 2014, Steve Clark wrote: > Hello List > > I have a Bootable USB stick that we use to Boot our servers and then install CentOS, > PostgreSQL and our SW thru a Kickstart script. > > It works like a charm but now we are thinking of going Virtual and prepping Virtual CentOS servers under VMware ESXi. > > However, to have the same "Boot and Install" functionality I see no other solution than Booting a VMware machine from an ISO. > > So, what I would like to do is to take the Bootable USB and make it into an ISO. > > Any ideas? As far as I know, there is no general way to do this. It's possible to create a bootable image that is also an valid ISO. But the mechanism used by the firmware to boot USB storage devices is quite different from the mechanism used to boot from a cdrom. Still, it's possible you may be able to solve your particular problem. A good place to start would be the syslinux package. It provides support for booting systems from a variety of media, including DOS FAT filesystems, Linux ext2/3/4 filesystems, PXE network boots, and ISO 9660 cdroms. Alan Stern