how to connect another hard disk after mandrake installed

[mohdali]

I have 20GB segate hard disk with four partition 5GB each partition i have but i purchase 10GB hard disk more i install mandrake in first hard disk after mandrake installed i connect 10GB hard disk but problems is it show only four partiton from first 20GB hard disk not show 10GB hard disk
partitions:

[bpark]

Is the new hard drive formatted to a certain file? I'd suggest formatting it to an ext3 with the command "mke2fs -j" If not, you sholuld be able to run fdisk or the friendlier version cfdisk to make the appropriate file system. Once that's done, you'll need to add the new hard drive into /etc/fstab.