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Bad disk on rx4640

 
Cara Rollins
Advisor

Bad disk on rx4640

Hi, I have a bad boot disk on an rx4640 - /dev/dsk/c2t1d0s2. The IO path is 0/1/1/0.1.0. How do i tell if this is slot 0 or 1 on the front of the server?
Happiness lies in the joy of acheivement and the thrill of creative effort.
5 REPLIES
Sunny123_1
Esteemed Contributor

Re: Bad disk on rx4640

Hi

Use dd command after running it the LED will blow of your harddisk.



Regards
Sunny
Torsten.
Acclaimed Contributor

Re: Bad disk on rx4640

Path 0/1/1/0.1.0 is always the upper disk.

The lower disk is either
0/1/1/0.0.0

or

0/1/1/1.0.0

depending on the disk backplane (single or dual bus).

Hope this helps!
Regards
Torsten.

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Cara Rollins
Advisor

Re: Bad disk on rx4640

what is the sytax and option for dd to query only? i dont see it in the man page.
Happiness lies in the joy of acheivement and the thrill of creative effort.
Ganesan R
Honored Contributor

Re: Bad disk on rx4640

Hi,

To read from the disk without any distruction,

dd if=/dev/rdsk/c2t1d0 of=/dev/null bs=1024k count=64

This will read initial 64MB of the data from the disk. You can omit count if you want to read the entire disk.

But if the disk is dead, dd command may hang.
Best wishes,

Ganesh.
Vivek Bhatia
Trusted Contributor

Re: Bad disk on rx4640

Hi Cara,

Run the below command and you will see the LED blinking.

#dd if=/dev/dsk/c2t1d0 of=/dev/null

Then you can remove the disk form the slot.

Regards,
Vivek