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Break the mirror

Posted on 2008-10-03
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Last Modified: 2012-05-05
hi,

I am using server 2003... and i woul dlike to break the mirror between the two physical drives, and leave both entact with the operating system and data....
can it be done, and will it still boot?
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Question by:intelogent
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by:authen-tech
ID: 22639165
If you have a software mirror through disk manager, then you should leave the primary drive and remove the other drive.  Then you can boot to the primary and it will see that the mirror backup is missing.  If you want to boot to the second drive and you didn't set it up correctly in the first place...you can create a boot disk that will allow you to pick which drive you want to boot to.  
http://support.microsoft.com/kb/305595

hope that helps
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by:intelogent
ID: 22640530
so then,

assuming it was set   up properly,,,,, removing any of the two drives should leave a bootable drive in place.

do i have that right?
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by:authen-tech
ID: 22640881
Yes.  But not a bad idea to backup the boot.ini and other files to create a bootable floppy or cd beforehand...just in case.  Also Make sure you have a successful backup before you try anything!

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by:intelogent
ID: 22640974
i will report back...... sort of excited to see what happens...

 i think i am becoming a geek..:)
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by:intelogent
ID: 22667907
eith of the two drives did not boot.... both together did....
i reposted this question... asking for very specific instructions...

you wrote
 "If you have a software mirror through disk manager, then you should leave the primary drive and remove the other drive.  Then you can boot to the primary and it will see that the mirror backup is missing. "

i see that when i go to my computer/ manage/ diskmanagement i only see one drive...   woul dthat tell me that this is all my computer sees?
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authen-tech earned 500 total points
ID: 22668534
If you only see one drive when the mirror is in place, then you have a hardware mirror.  That means you must go to the screen prior to windows loading on startup to access the management tool.  You MAY have another software program that lets you manage it in windows, but usually not.  Best to open the case and see what kind of raid card you have in there.  Then try to lookup the instruction manual.  You can also watch when windows boots and there will be a - press this key to boot to raid or mirror type message that will get you to the management screen.  Most hardware mirrors just work great no matter which drive fails it will start.
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