Adding new HD to Solaris 5.6

yeah, i did that and was able partition and create newfs and mount accordingly. But when i reboot the system still gives that message. Is it because its not a sun disk ?

can you show / describe steps you did to add disk?

(1) Installed the HD and booted up the server
(2) logged as root and did format (the HD was listed as available in the disk selections)
(3) did label
(4) partition - created one partition not on the entire disk from cylinder 0-4000c
(5) did label again
(6) created newfs on that one partition
(7) did a mount

if you run  prtvtoc for the new disk, what do you get?

attached is the output.

where is the attachement?

* /dev/rdsk/c0t2d0s3 partition map
*
* Dimensions:
*     512 bytes/sector
*     214 sectors/track
*      12 tracks/cylinder
*    2568 sectors/cylinder
*    6924 cylinders
*    6922 accessible cylinders
*
* Flags:
*   1: unmountable
*  10: read-only
*
* Unallocated space:
*      First     Sector    Last
*      Sector     Count    Sector
*      264504 4294702792 4294967295
*     7704000 4287527800    264503
*
*                          First     Sector    Last
* Partition  Tag  Flags    Sector     Count    Sector  Mount Directory
       0      2    00          0    264504    264503
       1      3    01     264504    264504    529007
       2      5    01          0  17775696  17775695
       3      0    00          0   7704000   7703999   /export/home/scsi/backup
       6      4    00     529008  17246688  17775695

what is your server model? are you sure that the message comes from this disk? can you show /etc/vfstab file contents? is this filesystem automatically mounted when system is booted?

yes, its mounted at boot. vfstab contains this entry only for that HD:
/dev/dsk/c0t2d0s3 /dev/rdsk/c0t2d0s3 /export/home/scsi/backup ufs 2 yes -
and I am able to work on that partition.
The server sun enterprise 450 ultrasparc-II 296MHz Sun-OS 5.6

i rebooted the server again and this time i am not seeing this error in the /var/adm/messages. i have not made any changes since the previous reboot. both times i rebooted with init 6

0.c0t0d0 <SUN4.2G cyl 3880 alt 2 hd 16 sec 135>
/pci@1f, 4000.scsi@3/sd@0,0
1.c0t1d0 <SUN4.2G cyl 3880 alt 2 hd 16 sec 135>
/pci@1f, 4000.scsi@3/sd@1,0
2.c0t2d0 <SEAGATE-ST39102LC-0005 cyl 6922 alt 2 hd 12 sec 214>
/pci@1f,4000/scsi@3/sd@2,0 (the one that was added)