Boot tinycore iso with grub2

[beroje]

menuentry "Tinycore" {
set root='(/dev/sda,msdos6)'
linux (hd0,msdos6)/tinycore/boot/vmlinuz quiet waitusb=5 blacklist=pcspkr nozswap nodhcp
initrd (hd0,msdos6)/tinycore/boot/core.gz
}

menuentry "xPud" {
set root='(/dev/sda,msdos6)'
loopback loop (hd0,msdos6)/Xpud/xpud-0.9.2.iso
linux (loop)/boot/xpud isofrom=/Xpud/xpud-0.9.2.iso noisapnp
initrd (loop)/opt/media
}

menuentry "EZremaster" {
set root='(/dev/sda,msdos6)'
loopback loop (hd0,msdos6)/EZremaster/ezremaster.iso
linux (loop)/boot/vmlinuz isofrom=/EZremaster/ezremaster.iso noisapnp
initrd (loop)/boot/core.gz
}

[genec]

you definitly can boot an iso file from grub2, not grub (1.xx)

Config clauses please.  beroje's examples are to read files from ISO then boot those files and NOT boot from ISO.  People don't understand the extreme difference between these two.  It would also be beneficial to provide versions for reference.