V210 to V440

I recently acquired a server for home use. Currently, I'm running a V210. I was wondering of a way to basically swap hard drives into the V440.

I would like to avoid reinstall on the V440 for many reasons.

Currently on the V440, when I try to boot up it forces itself into System Maintenance Mode. I type my root password to access the system. I then see that nothing is mounted. Since nothing is mounted, I don't have access to any commands. I copy a few commands into another directory I created on the / folder.
I also see that the drive sequencing changed. This to me explains why nothing is mounting. I edit vfstab accordingly only for utter failure in results.
I try to manually mounting a slice, and I get forced into read-only.

mount -F ufs -o rw /dev/dsk/c0t0d0s7 /mnt

Here's my vfstab

#device         device          mount           FS      fsck    mount   mount
#to mount       to fsck         point           type    pass    at boot options
#
fd      -       /dev/fd fd      -       no      -
/proc   -       /proc   proc    -       no      -
/dev/dsk/c0t0d0s3       -       -       swap    -       no      -
/dev/dsk/c0t0d0s0       /dev/rdsk/c0t0d0s0      /       ufs     1       no
-
/dev/dsk/c0t0d0s6       /dev/rdsk/c0t0d0s6      /usr    ufs     1       no
-
/dev/dsk/c0t0d0s1       /dev/rdsk/c0t0d0s1      /var    ufs     1       no
-
/dev/dsk/c0t0d0s7       /dev/rdsk/c0t0d0s7      /export/home    ufs     2
yes     -
/dev/dsk/c0t0d0s5       /dev/rdsk/c0t0d0s5      /opt    ufs     2       yes
-
/devices        -       /devices        devfs   -       no      -
ctfs    -       /system/contract        ctfs    -       no      -
objfs   -       /system/object  objfs   -       no      -
swap    -       /tmp    tmpfs   -       yes     -
sharefs         -       /etc/dfs/sharetab       sharefs -       no      -

I also can not boot into single user mode due to lack of a password. I can not reset it because the hacked hard drive I'm using has no clue what to do with eeprom.

Any and all assistance is appreciated.
Thank you

boot from cdrom to single user mode