I noticed I can switch to GRUB but not back to ISOLINUX
ISOLINUX only understands ISO filesystems.
PXELINUX understands tftp (not sure if this can be chainloaded from grub4dos).
ISO emulation is limited:http://syslinux.zytor.com/wiki/index.ph ... pletely.21
MEMDISK of Syslunux does the same as the grub4dos command: "map --mem file.iso (hd32); map -hook; root (hd32); chainloader (hd32)"
If you get the errorm that the file can't be found, it means that grub4dos can't find the file at that locationsIF you are booting from PXE, "find --set-root /ubcd/custom/012708.iso" doesn't make much sense.
Download Ultimate Boot CD v5.0
Use Parted Magic
for handling all partitioning task: http://partedmagic.com/