I have a running version of slackware on my hdc disk, i created raid devices, format them, and copy slackware on my raid devices. I have 4 partitions /boot, /var /home and /. When i copy my slackware on raid device i mount my md2 on mnt (mount /dev/md2 /mnt), i create directories for other mount points (mkdir -p /mnt/home,...) and them mount them (mount /dev/md4 /mnt/home,...). I copy running version of slackware on my md devices, set up /mnt/etc/fstab to boot from md devices, reconfigure lilo and then restart my computer. After booting on my md device i only see root partition. Al my other mount points are gone

(/home, /var, /boot). When running df i only see my md2 device, md1, md3, md4 are all gone. I am new to linux and i am lost out of ideas.
Thnx, julc