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09.30.2005 at 03:55PM PDT, ID: 21580377
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5.4

Boot to different disks from Open Boot Prompt

Asked by barthalamu in Sun Solaris

Tags: , , , ,

I have a Sun Enterprise E3500 on Solaris 8 that have 3 identical internal Sun 18G fiber channel disks.  The problem is that, they look IDENTICAL so I don't know how to boot to a different disk from the Open Boot Prompt.  Here is what they look like from the format command:

AVAILABLE DISK SELECTIONS:
       0. c0t0d0 <SUN18G cyl 7506 alt 2 hd 19 sec 248>
          /sbus@2,0/SUNW,socal@d,10000/sf@0,0/ssd@w210000203717a582,0

       1. c0t1d0 <SUN18G cyl 7506 alt 2 hd 19 sec 248>
          /sbus@2,0/SUNW,socal@d,10000/sf@0,0/ssd@w210000203717533a,0

       2. c0t2d0 <SUN18G cyl 7506 alt 2 hd 19 sec 248>
          /sbus@2,0/SUNW,socal@d,10000/sf@0,0/ssd@w210000203718a707,0


I would like to boot from disk number 2 (c0t2d0) as it is a copy of disk number 0.
From the Open Boot Prompt, this is what shows up:

{a} ok devalias
screen                   /sbus@2,0/cgsix@1,0
disk                     /sbus@2,0/SUNW,socal@d,10000/sf@0,0/ssd@0,0
disksocal                /sbus@2,0/SUNW,socal@d,10000/sf@0,0/ssd@0,0
disk                     /sbus@3,0/SUNW,fas@3,8800000/sd@0,0
diskbrd                  /sbus@3,0/SUNW,fas@3,8800000/sd@a,0
diskisp                  /sbus@3,0/QLGC,isp@0,10000/sd@0,0
net                      /sbus@3,0/SUNW,hme@3,8c00000
cdrom                    /sbus@3,0/SUNW,fas@3,8800000/sd@6,0:f
tape                     /sbus@3,0/SUNW,fas@3,8800000/st@4,0
scsi                     /sbus@3,0/SUNW,fas@3,8800000
disk0                    /sbus@3,0/SUNW,fas@3,8800000/sd@0,0
disk1                    /sbus@3,0/SUNW,fas@3,8800000/sd@1,0
disk2                    /sbus@3,0/SUNW,fas@3,8800000/sd@2,0
disk3                    /sbus@3,0/SUNW,fas@3,8800000/sd@3,0
disk4                    /sbus@3,0/SUNW,fas@3,8800000/sd@4,0
disk5                    /sbus@3,0/SUNW,fas@3,8800000/sd@5,0
tape0                    /sbus@3,0/SUNW,fas@3,8800000/st@4,0
tape1                    /sbus@3,0/SUNW,fas@3,8800000/st@5,0
ttya                     /central/fhc/zs@0,902000:a
ttyb                     /central/fhc/zs@0,902000:b
keyboard                 /central/fhc/zs@0,904000
keyboard!                /central/fhc/zs@0,904000:forcemode


When I try to 'boot disk' or 'boot disksocal', it boots to the first disk (c0t0d0) every time.
Here is when I see from a show-disks at the OBP:

{a} ok show-disks
a) /sbus@7,0/QLGC,isp@0,10000/sd
b) /sbus@7,0/SUNW,fas@3,8800000/sd
c) /sbus@6,0/QLGC,isp@1,10000/sd
d) /sbus@6,0/SUNW,socal@d,10000/sf@1,0/ssd
e) /sbus@6,0/SUNW,socal@d,10000/sf@0,0/ssd
f) /sbus@3,0/QLGC,isp@0,10000/sd
g) /sbus@3,0/SUNW,fas@3,8800000/sd
h) /sbus@2,0/SUNW,socal@d,10000/sf@1,0/ssd
i) /sbus@2,0/SUNW,socal@d,10000/sf@0,0/ssd
q) NO SELECTION


Please let me know if you have any ideas.  I'm sure it's something minor that I am just missing.Start Free Trial
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About this solution

Zone: Sun Solaris
Tags: boot, solaris, prompt, disk, open
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Solution Provided By: jephilc
Participating Experts: 5
Solution Grade: A
 
 
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