Problem adding mirror to system partition

We have a SBS 2003 server which had a couple of dynamic discs with 3 partitions mirrored onto the 2nd disk. This was working fine until the primary disk started to fail and windows wouldnt boot.
I fixed it my removing the 1st hard disk and reconfiguring the 2nd to the primary and rebooting. Then I removed the disk from the configuration using disk manager.

Now I have received a replacement disk so I installed it and configured as a dynamic disk. I then mirrored the 3 partitions onto the new disk. Two partitions are fine but I am getting the following error message when doing the system partition :-
"Local Disk Manager could not update the boot file for any boot partitions on the target disk. Verify your arcpath listings in the file boot.ini or through the bootcfg.exe utility."
It rebuilds the partition but I am concerned that it is not updating the boot record etc... which could result in a problem if the primary hard disk fails.

C:\Documents and Settings\Administrator>type c:\boot.ini
[boot loader]
timeout=30
default=multi(0)disk(0)rdisk(0)partition(1)\WINDOWS
[operating systems]
multi(0)disk(0)rdisk(0)partition(1)\WINDOWS="Windows Server 2003 for Small Business Server" /fastdetect

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grbladesAsked:
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Henrik JohanssonConnect With a Mentor Systems engineerCommented:
As stated in the message, you nead to verify/update the ARC paths by editing boot.ini manually because disk manager can't do it for you.
Ensure that you have ARC paths for both disks defined in boot.ini and can boot with each option from the boot menu.
I just remembered that my previous post was comparing with a SCSI-based system. If using IDE, you change the rdisk

See KB about how ARC path is configured.
http://support.microsoft.com/kb/102873
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Henrik JohanssonSystems engineerCommented:
Duplicate the line in [operating systems] section and increase the disk-parameter on the additional line.

multi(0)disk(1)rdisk(0)partition(1)\WINDOWS="Windows Server 2003 for Small Business Server - Boot Mirror" /fastdetect
 

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grbladesAuthor Commented:
I added that line and then removed and readded the mirror but I still get the same error.
Do I need to reboot first?
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grbladesAuthor Commented:
Incrementing the rdisk value fixed the problem. Thanks
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