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My system is asus p5k-e/wifi-ap with ich9r chipset.

I am running windows7 64-bit ULTIMATE on my boot drive.

I recently got an identical drive.

I want to enable raid 1 without reinstalling windows.

Is this possible? And what would be the best way to go about it?

edit: i did the software raid 1 thing: converting disks to dynamic + mirroring.

windows will not boot now from any of the drives...

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3 Answers 3

You have two options:

  1. Software RAID
  2. Fake RAID.

As Chris wrote, this last is not to be possible without reinstalling, but you can make a backup and avoid most of the hassle.

The other option in is disk management. Right click on the new drive and use 'Add mirror'.


  • This depends on the windows version you have. You write Win 7 x64, but which win 7 x64? There is a whole range from win 7 starter to win 7 ultimate.
  • That would make your data redundant and give you the read-speed advantages of a mirror. It will not duplicate the boot sector. Thus if the first drive fails you will still have a copy of all your data, but you will have to do a repair from DVD in order to boot.

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its windows 7 64 ultimate –  eyaler Feb 27 '13 at 19:17
Win 7 ultimate has that option. I will add a screenshot showing its location. –  Hennes Feb 27 '13 at 19:18
i know how to do it :) –  eyaler Feb 27 '13 at 19:19
Ah, good. Still added since it still makes it easiest for other who may find this post at a later time. Also, I am suggesting Chris' answer if you need a full backup (including boot-sector etc) and if you have a spare system which understands IRST in case of a motherboard failure. If you do not that the generic 'add mirror' will work on any win7 version without motherboard support. –  Hennes Feb 27 '13 at 19:25
@Hennes Hi there, I happen to be looking for this as well, and I have a little question: Is the "Add mirror" option what you call "Fake RAID" and how does this compare to a "Normal RAID" in terms of performance? –  guisasso Feb 27 '13 at 19:58

If you are using Windows 7 Ultimate, you can using the built in imaging to create an image and store that on an external device.

You can then set up the RAID set in the system BIOS and then restore the image.


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You can do this using the motherboard RAID or in software using a Mirrored Volume in Windows. To use the motherboard RAID (assuming your BIOS is currently using ACHI) you will need to fix download and install the Intel Matrix RAID drivers. Then switch the BIOS to RAID mode. Last time I did this it required a couple of reinstalls and reboots for it to work correctly.

For a Mirrored Volume you can go to the Control Panel -> System and Security and click on 'Create and format hard disk partition'. On the new Disk right click and select 'New Mirrored Volume...'

enter image description here

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