When ever i change my hard disk position from primary master to secondary slave, the solaris os gives a panic messge. how could i solve it.

try to boot the system from the "ok" prompt with the option "boot -rs". if you reach the single user mode, type ctrl+d to go on to runlevel 3.

hth

if i'm understanding this correctly, you actually move the physical disk device's position on the cable like you could on an x86 box ...

if so, you need to edit /etc/vfstab and put in the correct post-move disk device designator prior to moving the disk as not doing so will make solaris mount the root filesystem according to an erroneous mount table ...

i.e.,
assume root filesystem pre-move is /dev/dsk/c0t0d0s0
assume root filesystem post-move is /dev/dsk/c0t1d0s0

on boot pre-move, root filesystem to be mounted is /dev/dsk/c0t0d0s0 ... if edit to /etc/vfstab is not done prior to move, the root filesystem to be mounted is still /dev/dsk/c0t0d0s0 after the move so the box tries to mount a non-existent filesystem but cannot find it so it panics ...

btw, this also applies when moving a non-mirrored disk drive to a different slot on a multi-slot server among other things ....

see "man vfstab" for more information ...


good luck!