fdisk -l:

Disk /dev/hda: 255 heads, 63 sectors, 1650 cylinders
Units = cylinders of 16065 * 512 bytes

   Device Boot    Start       End    Blocks   Id  System
/dev/hda1   *         1       261   2096451   83  Linux
/dev/hda2           262       337    610470   82  Linux swap
/dev/hda4           338      1650  10546672+   5  Extended
/dev/hda5           338       592   2048256   83  Linux
/dev/hda6           593       720   1028128+  fd  Linux raid autodetect
/dev/hda7           721       848   1028128+  fd  Linux raid autodetect
/dev/hda8           849      1103   2048256   83  Linux
/dev/hda9          1104      1358   2048256   8e  Linux LVM

/etc/raidtab:

raiddev /dev/md0
           raid-level              1
           nr-raid-disks           2
           persistent-superblock   1
           chunk-size              8

           device                  /dev/hda6
           raid-disk               0
           device                  /dev/hda7
           raid-disk               1


mkraid /dev/md0
vgscan
pvcreate /dev/md0
vgcreate cowboyvg /dev/md0
lvcreate -L 200M -n cowboylv cowboyvg
mkreiserfs /dev/cowboyvg/cowboylv
mkdir /cowboy

/etc/fstab:
LABEL=/12               /                       ext3    defaults        1 1
/dev/cowboyvg/cowboylv  /cowboy                 reiserfs defaults       1 2
none                    /dev/pts                devpts  gid=5,mode=620  0 0
none                    /proc                   proc    defaults        0 0
none                    /dev/shm                tmpfs   defaults        0 0
/dev/hda2               swap                    swap    defaults        0 0
/dev/cdrom              /mnt/cdrom              iso9660 noauto,owner,kudzu,ro 0 0
/dev/fd0                /mnt/floppy             auto    noauto,owner,kudzu 0 0

mount /cowboy
umount /cowboy

/etc/fstab:
LABEL=/12               /                       ext3    defaults        1 1
none                    /dev/pts                devpts  gid=5,mode=620  0 0
none                    /proc                   proc    defaults        0 0
none                    /dev/shm                tmpfs   defaults        0 0
/dev/hda2               swap                    swap    defaults        0 0
/dev/cdrom              /mnt/cdrom              iso9660 noauto,owner,kudzu,ro 0 0
/dev/fd0                /mnt/floppy             auto    noauto,owner,kudzu 0 0


rmdir /cowboy
lvremove /dev/cowboyvg/cowboylv
vgchange -a n cowboyvg
vgremove cowboyvg
cd /etc
rm -rf lv*
raidstop /dev/md0
cd /etc
mv raidtab raidtab.ok