grub legacy map does not work when booting from cdrom

[adrian15]

I've tried to do this:

map (hd1) (hd0)
map (hd0) (hd1)
rootnoverify (hd1)
chainloader +1
boot

and it does work if you boot from hd0.

But if you boot from a cdrom it does not work, it just freezes at: boot.

As long as I use a fork from grub legacy 0.97 (talking about super grub
disk) this might be fixed on the cvs. Have you seen this error before?
This bug makes not useful the map commands from a cdrom.

cur_part_offset should be set to 0 maybe? (The first cdrom error that I
found, the error 25 had a problem with this variable.)

adrian15