GRUB +Debian Potato +NT...

[technicien Info]

Hi every one!

Well, I got some problem with GRUB on my computer that run either
Linux Debian Potato and NT. I've installed it as follow:

> root (hd0,2)
> makeactive
> setup (hd0,2)

assuming that my hard drive (the only one) is partitioned like that:

hda1 -> NT
hda2 -> Linux Swap
hda3 -> / (bootable)
hda5 -> /usr
hda6 -> /users

After installation, I reboot end all seems ok. GRUB is launch and menu
appears. I fisrt boot Linux, OK. Reboot and try NT. It works well. Reboot.
And PROBLEME: GRUB has disappeared! And NT loader is launch. Where is GRUB
?! If I halt the computer, it's still NT loader. I don't know what to
do. Does someone have an idea?

By the way, I use GRUB 0.5.93.1, the package provides with Potato. Does
the probleme come from this?

Hope someone can bring me some help ;)

Thanks,

cedric.