first what type of filesystem on these partitions
look first under places > removable media
if they are there then click on it
it will be mounted to system when you do that
the linux system needs any driver to be attached (mounted ) to it's tree in order to deal with it
if they are not there
then open the terminal (accessories > terminal )
which is a shell emulator (command line interface )
then make the points you want to attach the filesystem to it
"sudo mkdir /media/My1"
where My1 is the name of the mount point to which you will attach your partition
be careful that linux is case sensitive
My_Folder is not thw same as my_folder
then
"sudo mount -t [ntfs,vfat] /dev/sd[a,b..1,2,3..] /media/My1"
you have to choose the filesystem type (vfat or ntfs )
which hard drive sda or sdb
which partition 1,2,3...
if you got an error and the filesystem type is right it will be mostly because of unclean shutdown
if you don't know the dev available
type
"ls /dev/ | grep sd"
good luck