Checking partition table - editing GRUB

[Albert DE WINT <adwint pandora be>]

Hi,

I need to update GRUB.  

Besides Red Hat9, I also have Mandrake 9.0 on this HD, (but it is not
displayed in GRUB)  Now, I would like to replace Mandrake 9.0 with 9.1.

Additionally, I have an unused NTFS partition, formerly containing XP.
I want to remove that one, to clear-up  space.

I'm not sure Mandrake 9.1 will set-up GRUB correctly by default (or
LILO?)  I prefer GRUB, so I want to keep it.
  
Since I have two RH9 kernel versions on this disk, I'm not sure how the
partition table looks today. 

I can't recall the command to display the partition table including
partition type, start, end, size etc.

Thank your for your help.

Albert