SUMMARY: Disk Suite Boot Disk Mirror

From: Erik Williams <>
Date: Fri Jun 14 2002 - 14:06:21 EDT
The response:

It is only possible to use the fmthard way if the disks are exactly the same
in geometry. It is possible to mirror unlike disks by creating the slices by
hand. The slices just have to be larger than those they are mirroring. It
was also suggested that I could redefine the  geometry of the second disk
(too scary for me).

Thank you to : 

Dan Astoorian
John Timon
Paul Norton
Darren Dunham 
Chris Cariffe
Michael Maciolek
Charles E. Rawls 
dave Leach
Gabel Martin

The question:

I have two very similar disks on an Ultra1. I want to mirror the boot disk
to the second using DiskSuite ->

# format
Searching for disks...done

       0. c0t0d0 <HP-4.26GBA80-LXP0-LXP0 cyl 5823 alt 2 hd 10 sec 143>
       1. c0t1d0 <HP-4.26GBB80-0854-0854 cyl 5848 alt 2 hd 8 sec 178>

I am tring to copy the vtoc from the boot disk to the second disk. I am
getting the following error -> 

# prtvtoc /dev/rdsk/c0t0d0s2 | fmthard -s - /dev/rdsk/c0t1d0s2
Partition 0 not aligned on cylinder boundary: "       0      2    00
1049620   7168590   8218209   /"

Do the two disk that you want to mirror have to be EXACTLY alike? How can I
get around this issue of different cylinder boundaries?
sunmanagers mailing list
Received on Fri Jun 14 14:12:36 2002

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