[expert] Linux file system update?

[vern]

After adding a new hard drive to my system and creating
an ext2fs type partition, how do I add this to my file
system table?? I would like to have Mdk 7.1 to start using
this partition. I created the partition with PartitionMagic
and did not specify a mount point at the time of creation.
Do I need to go back into PartionMagic and do this??
Any help with the above would be most appreciated!!
vern