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So I have been using Linux software raid for ages, unfortunately now I need to install Windows 7 on a notebook and since the machine has two disks I was wondering how do I setup software Raid in Windows.

Could you please provide me with some tutorial how to configure the two disks as software RAID 1 (Mirror) during the installation?

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  • See also superuser.com/questions/122139/… (Not a precise enough match to close as duplicate, but close enough to read).
    – Hennes
    Commented Jan 20, 2013 at 18:39
  • This is not during installation, but you can set both drives to AHCI mode (NOT RAID mode), install windows on one drive. Then after booting windows go to disk management and create a mirror.
    – Hennes
    Commented Jan 20, 2013 at 18:42
  • @Hennes That's weird. Is it a real mirror (meaning I can just remove the original disk and boot from the mirror)?
    – Šimon Tóth
    Commented Jan 20, 2013 at 18:50
  • Not sure. serverfault.com/questions/438928/… is the nearest experience I haave with this. (I personally use hardware RAID, so I never had to learn it).
    – Hennes
    Commented Jan 20, 2013 at 19:04
  • Remember: RAID 1 is only supported on Pro versions of Windows or better. RAID 5 is only supported on Server editions. RAID 0 is supported but not recommended with all Home versions
    – Canadian Luke
    Commented Jan 20, 2013 at 21:22

1 Answer 1

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Basically you need to do this:

  1. Have two physical hard disks in your laptop, and laptop's BIOS should support booting from either of some (some laptops cannot boot from the secondary hard disk).

  2. Install Windows as usual.

  3. Convert both hard disks to "dynamic disks" (in the Disk Management, right-click on the hard disk to access menu)

  4. Right click on the system partition, select "add mirror", and choose the second hard disk as a target.

You could do these steps when partitioning during the install, but it's not really needed... It's easier to do after the install. You'll have to wait the initial mirror sync, though (computer is usable but disks will be busy).

Notice: I personally found Windows soft-RAID very picky... Any bluescreen or unclean shutdown will throw the mirrors out of sync, resulting in lengthy re-syncing afterwards. Go with hardware raid or fakeraid if possible at all.

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