Which disk did I boot from?

[Darrell Allen]

Hello everyone,

I'm using MirrorDisk on 11.0. I've successfully mirrored the boot disk and booted from it but I haven't found a way to tell which disk I'm currently booted from. Is there a command that will tell me that?

Thanks.

[Kandaswamy Natarajan]

#setboot
this command will give you the primary boot path and secondary boot path of the PDC .
the primary boot path is where the system will use for booting,
once you have booted it doesnt matter where you booted from.
(this is assuming you hv done your mirroring correctly).

[MANOJ SRIVASTAVA]

Hi Darell


1. setboot
2. lvlnboot -v


Manoj Srivastava

[James R. Ferguson · Accepted solution]

Hi Darrel:

# echo boot_string/S|adb /stand/vmunix /dev/mem

This will show you the actual path from which you booted.

...JRF...

[Peggy Fong]

Hi

While setboot tells you primary path and alternate path it doesn't tell you if someone booted from which path.

When you do lvlnboot -v /dev/vg00 does the order of the disks change (boot disks) when you boot from the mirror disk? If so, that would be one way to check.

No guarantee but try lssf /dev/root
lssf /dev/rroot since this is accessed prior to LVM may be the hardware address will point to the disk that was booted.

As mentioned previously, it should matter which disk was used...but you never know :)

Hope this helps
Peggy

[federico_3]

Use setboot

[Vincenzo Restuccia]

setboot see the disk of boot and alternate boot,with lifcp /dev/dsk/cxtyd0:AUTO - you can see the lif area of boot.

[Bill McNAMARA_1]

have a look at the dmesg output after boot.

Later,
Bill

[Darrell Allen]

Thank you all for replying. I appreciate all of them however James gets the gold star as his answer to the question was dead on.

Darrell