The aim of this tutorial is to create a Multiboot Linux Mint DVD. The DVD will contain 32-bit and 64-bit editions of Linux Mint. For this tutorial I’ve selected Cinnamon flavor.

####Step 1 Download the following ISOs from Mint’s website:

– linuxmint-13-cinnamon-dvd-32bit.iso
– linuxmint-13-cinnamon-dvd-64bit.iso

Create the following directory structure:

mkdir -p mint-multiboot/boot/{grub,iso}

Now, move the two ISOs into the ‘iso’ folder (i.e boot/iso).

####Step 2 Create a file named grub.cfg in boot/grub folder and insert the following:

menuentry “Start Linux Mint 32-bit” {
set gfxpayload=keep
loopback iso /boot/iso/linuxmint-13-cinnamon-dvd-32bit.iso
linux    (iso)/casper/vmlinuz  file=/cdrom/preseed/mint.seed boot=casper iso-scan/filename=/boot/iso/linuxmint-13-cinnamon-dvd-32bit.iso quiet splash —
initrd    (iso)/casper/initrd.lz
}
menuentry “Start Linux Mint 32-bit (compatibility mode)” {
loopback iso /boot/iso/linuxmint-13-cinnamon-dvd-32bit.iso
linux    (iso)/casper/vmlinuz  file=/cdrom/preseed/mint.seed boot=casper xforcevesa iso-scan/filename=/boot/iso/linuxmint-13-cinnamon-dvd-32bit.iso ramdisk_size=1048576 root=/dev/ram rw noapic noapci nosplash irqpoll —
initrd    (iso)/casper/initrd.lz
}
menuentry “Start Linux Mint 64-bit” {
set gfxpayload=keep
loopback iso /boot/iso/linuxmint-13-cinnamon-dvd-64bit.iso
linux    (iso)/casper/vmlinuz  file=/cdrom/preseed/mint.seed boot=casper iso-scan/filename=/boot/iso/linuxmint-13-cinnamon-dvd-64bit.iso quiet splash —
initrd    (iso)/casper/initrd.lz
}
menuentry “Start Linux Mint 64-bit (compatibility mode)” {
loopback iso /boot/iso/linuxmint-13-cinnamon-dvd-64bit.iso
linux    (iso)/casper/vmlinuz  file=/cdrom/preseed/mint.seed boot=casper xforcevesa iso-scan/filename=/boot/iso/linuxmint-13-cinnamon-dvd-64bit.iso ramdisk_size=1048576 root=/dev/ram rw noapic noapci nosplash irqpoll —
initrd    (iso)/casper/initrd.lz
}

####Step 3 Install xorriso using the following command:

apt-get install xorriso

To get the latest version, you may also download the source from http://www.gnu.org/software/xorriso and compile.

####Step 4 Now step in one folder before ‘mint-multiboot’ and you can generate the multiboot iso using the following command:

grub-mkrescue -o Mint-multiboot-dvd.iso mint-multiboot

####Step 5 Burn the iso to a DVD or use imagewriter to create a live usb. You should now be able to select 32-bit or 64-bit at boot.