Set up raid after windows install


New Member
Hi all,

I have simple issue, but haven't found any answer to that.

I have W7 installed, works fine. I bought 2 HDDs and wanna add them just as data disk and set up as RAID1. If I set up RAID in bios, Windows crashes when loading with classic blue screen + restart. Is there any way to make it work (install some driver etc.) or do I have to reinstall Windows with RAID set up prior to Windows installation? I have Asus P7P55D-E board.


Last edited:
First do this in Windows:

  1. Exit all Windows-based programs.
  2. Click Start, type regedit in the Start Search box, and then press ENTER.
  3. If you receive the User Account Control dialog box, click Continue.
  4. Locate and then click one of the following registry subkeys: HKEY_LOCAL_MACHINE\System\CurrentControlSet\Services\Msahci
  5. In the right pane, right-click Start in the Name column, and then click Modify.
  6. In the Value data box, type 0, and then click OK.
  7. On the File menu, click Exit to close Registry Editor.

Reboot to bios and set up the RAID. Save. Reboot to Windows.

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