China DOS Union

I have read many articles and also paid attention to the case of sentences and file names, spaces, and ISO continuity. But so far, among the sentences I have used, only the following sentence can boot the IS file, and the version used is after 2008/10/22.

chainloader /ldrxpe
boot

All the sentences that others can successfully boot the ISO have been used, but the displayed information is either that MOUT is not possible or that unsupported executable format. And a phenomenon is found: it can only boot the IS in C:, but cannot boot the IS file in, for example, C:\GRUB. But in the grub file, grub/ldrxpe can be booted, but it can only boot the IS in C:, and cannot boot the IS and ISO in the folder.

title 1, Boot ISO
find --set-root /grub/msdos71s.iso
map --mem /grub/msdos71s.iso (0xff)
map --hook
chainloader (0xff)

title 2, Boot ISO
find --set-root /grub/msdos71s.iso
map /grub/msdos71s.iso (0xff)
map --hook
chainloader (0xff)

title 3, Boot ISO
find --set-root /grub/msdos71s.iso
map --mem /grub/msdos71s.iso (hd32)
map --hook
chainloader (hd32)

title 3, Boot ISO
find --set-root /grub/msdos71s.iso
map /grub/msdos71s.iso (hd33)
map --hook
chainloader (hd33)


map --mem (hd0,0)/msdos71s.iso (hd32)
map --hook
chainloader (hd32)
boot

NTFS format. There is a maotao.bin renamed ldrxpe in C:, the lst menu file, grldr, grub.exe, iso and is. In the grub folder, there are font.gz, xp2008.gz, and also ldrxpe, iso and is files.

[ Last edited by fliger on 2009-1-30 at 21:20 ]

Is it a problem with the statement or a problem of missing files?
I have done it with the menu generation tool, and I can boot the IS file in the non-system root directory,
but when booting the ISO file, it says I am missing KERNEL