dont know if this will help at all but here is my trk entry from my grub2 .cfg i have it off in a separate folder
menuentry "Trinity Rescue Kit" {
linux /trk3/kernel.trk ramdisk_size=49152 root=/dev/ram0 gfxpayload=1024x768 splash=verbose pci=conf1 vollabel=MULTIPASS
initrd /trk3/initrd.trk
}