Problems mirroring with VERITAS Volume Manager 4.1

[JM asks]

OS:          HP-UX 11.23
MODEL:       Superdome
APPLICATION: Veritas Volume Manager 4.1

PROBLEM:
I have to use what I have and pulled an "available" disk off  the shelf.  I have looked around and every step I take results in another search, fun.  I am trying to replace a mirrored root disk and get the message below.  I attached it as a RTF for better readability.  Thanks in advance for your comments.:

bash-2.05a# /usr/lib/vxvm/bin/vxdisksetup -iB c1t8d0 format=hpdisk
VxVM vxdisk ERROR V-5-1-558 Disk c1t8d0: Disk not in the configuration

SEQUENCE OF EVENTS:
bash-2.05a# vxdctl enable
bash-2.05a# /usr/lib/vxvm/bin/vxdiskunsetup -C c1t8d0s2

bash-2.05a# vxdisk list
DEVICE       TYPE            DISK         GROUP        STATUS
c0t8d0       auto:LVM        -            -            LVM
c0t10d0s2    auto:hpdisk     rootdisk01   oldroot      online
c0t12d0s2    auto:hpdisk     rootdisk02   rootdg       online
c1t8d0s2     auto:none       -            -            online invalid
c1t10d0s2    auto:LVM        -            -            LVM
c1t12d0s2    auto:LVM        -            -            LVM
c2t0d1       auto:LVM        -            -            LVM
c25t2d6      auto:LVM        -            -            LVM
-            -         rootdisk01   rootdg       removed was:c1t8d0s2

bash-2.05a# /usr/lib/vxvm/bin/vxdisksetup -iB c1t8d0s2 format=hpdisk
VxVM vxdisk ERROR V-5-1-558 Disk c1t8d0: Disk not in the configuration

bash-2.05a# /usr/lib/vxvm/bin/vxdisksetup -iB c1t8d0 format=hpdisk
VxVM vxdisk ERROR V-5-1-558 Disk c1t8d0: Disk not in the configuration

bash-2.05a# vxdisk list
DEVICE       TYPE            DISK         GROUP        STATUS
c0t8d0       auto:LVM        -            -            LVM
c0t10d0s2    auto:hpdisk     rootdisk01   oldroot      online
c0t12d0s2    auto:hpdisk     rootdisk02   rootdg       online
c1t8d0s2     auto:hpdisk     -            -            online
c1t10d0s2    auto:LVM        -            -            LVM
c1t12d0s2    auto:LVM        -            -            LVM
c2t0d1       auto:LVM        -            -            LVM
c25t2d6      auto:LVM        -            -            LVM
-            -         rootdisk01   rootdg       removed was:c1t8d0s2

bash-2.05a# vxdisk clearimport c1t8d0s2
bash-2.05a# /usr/lib/vxvm/bin/vxdisksetup -iB c1t8d0 format=hpdisk
VxVM vxdisk ERROR V-5-1-558 Disk c1t8d0: Disk not in the configuration

bash-2.05a# vxdisk list
DEVICE       TYPE            DISK         GROUP        STATUS
c0t8d0       auto:LVM        -            -            LVM
c0t10d0s2    auto:hpdisk     rootdisk01   oldroot      online
c0t12d0s2    auto:hpdisk     rootdisk02   rootdg       online
c1t8d0s2     auto:hpdisk     -            -            online
c1t10d0s2    auto:LVM        -            -            LVM
c1t12d0s2    auto:LVM        -            -            LVM
c2t0d1       auto:LVM        -            -            LVM
c25t2d6      auto:LVM        -            -            LVM
-            -         rootdisk01   rootdg       removed was:c1t8d0s2

bash-2.05a#