[tlug] lilo error message :(

["Zuco Pietro" <pietro@example.com>]

Hello.

I have 6G on my laptop and I have Windows and Linux on it.
The partitions are:
hda1 --> windows
hda2 --> ext2 /
hda3 --> swap

It now only boot linux, so I changed the lilo.conf and added the windows
partition. I did it a lot of times and always it works but today, lilo
return me this error message:

Added Linux
Device 0x0300: Invalid partition table, 4th entry
  3D address:            0/0/0 (-1)
  Linear address:        1/0/0 (0)

I don't know what this error is, and in the man of lilo there are no
information about.
Thenkyou in advance.
pietro