Here are some basic but important commands for dealing with LVM:
sudo pvcreate /dev/hdXX sudo vgextend reserve /dev/hdg1 sudo lvcreate -l38156 -n extras reserve or sudo lvcreate -L150G -n extras reserve sudo mkreiserfs /dev/mapper/reserve-extras sudo vgchange -a n miscellaneous sudo vgmerge reserve miscellaneous sudo vgmknodes sudo vgchange -a y reserve sudo mount /dev/mapper/reserve-miscellaneous /misc
lvremove reserve/storage vgdisplay -v vgreduce reserve /dev/hda4 mkreiserfs /dev/hda4 Edit fstab, then mount it! fdisk /dev/hda t to change partition type. 82 for ReiserFS. l to list the types.