Like before, we are going to be talking about the process of creating a self-contained Linux ISO for use in multibooting. Iconoclast USB Multiboot will be used to create the Linux ISO while we are using YUMI to create the Windows ISO.
Once you have created the partitions on your computer, go to the (USB) tab and within the (USB Drive) matrix, find the (Disk) tab. We have to create a bootable partition on the drive we are installing the ISO for. Then, we need to give the USB stick a target path, which can be done by clicking on the Refresh button on the top left of the dialog.(You'll find this in the bottom right hand corner of the dialog, if so.)
That's definitely a lot of disk space taken up. On my iMac 21.5\" with a 1TB disk I have a 17GB boot disk (boot, EFI, Recovery) and a single mount point (/Volumes/iMac) for the rest of the disk.
Mac uses UUID (Universally Unique Identifier) to identify partition on disk. We're going to delete the EFI partition and use the numbers of the new partition as the EFI partition UUID. If you are not familiar with this process, skim through them on Apple's website . 7211a4ac4a