Scripting

You will need to create a custom diskpart preinstall

The first step in creating a mirrored set using diskpart is to identify the disks to be used. This can be achieved using the list disk command:

DISKPART> list disk

  Disk ###  Status      Size     Free     Dyn  Gpt
  --------  ----------  -------  -------  ---  ---
  Disk 0    Online        30 GB      0 B
  Disk 1    Online         8 GB  8189 MB
  Disk 2    Online         8 GB  8189 MB

For the purposes of this tutorial we will be creating a mirrored volume based on a set consisting of disks 1 and 2. The mirrored volume is created by first creating a simple volume on the first disk and then adding a second disk to the mirrored set.

The first volume is created using the create volume command combined with the disk= directive. The size of the volume may also be specified using the size= directive. Omission of the size= option will cause diskpart to create volume which occupies all the available space on the designated disk. For example:

DISKPART>create volume simple disk=1

Having created the first volume on disk 1 the next step is to add the mirror volume on disk 2. This is achieved using the add command as follows:

add disk=2

The list volume command may be used to verify the new configuration:

DISKPART> list volume

  Volume ###  Ltr  Label        Fs     Type        Size     Status     Info
  ----------  ---  -----------  -----  ----------  -------  ---------  --------
  Volume 0     D                       DVD-ROM         0 B  No Media
  Volume 1     C                NTFS   Partition     30 GB  Healthy    System
* Volume 2                      RAW    Mirror      8189 MB  Healthy

As shown above the new volume is listed as volume 2 and shown as Mirror. The volume is also listed as RAW because it has not yet been formatted with a file system. This, too, can be achieved within the diskpart tool:

DISKPART> select volume 2
DISKPART> format fs=ntfs label="Mirrored Volume"

  100 percent completed

DiskPart successfully formatted the volume.

Once formatted, the last task is to assign either a drive letter or mount point to the volume by which it will be accessed:

To assign a drive letter:

DISKPART> assign letter=E:

DiskPart successfully assigned the drive letter or mount point.

To assign a mount point:

DISKPART> assign mount=\bigvol

DiskPart successfully assigned the drive letter or mount point.

Once assigned a drive letter or mount point, the new mirrored volume is ready for use.

Do you put that at the very first task in the preinstall?