How can I use DiskPart to create a mirrored disk?

A. You can use the DiskPart utility from the Windows 2000 Server Resource Kit or the Win2K Professional Resource kit to either create a new mirrored disk or mirror an existing disk. (Be aware that Windows XP doesn't support mirrored disks.) To create a new mirrored disk, perform the following steps:

Download and install the DiskPart utility from the Microsoft Web site.
Go to Start, Run, then type
```
cmd
```
to start a command-line session.
Type
```
diskpart
```
to start a DiskPart session.

Type

list disk

to list the current disks. The list will look like

   Disk ### Status Size  Free    Dyn  Gpt
   -------- ------ ----  ------- ---- --- 
   Disk 1   Online 28 GB 6621 MB *
   Disk 2   Online 12 GB 12 GB   *
   Disk 3   Online 29 GB 29 GB   *

Type
```
select disk 2
```
to select disk 2 as the disk on which you want to create the mirror.
Type
```
create volume simple size=100
```
to create a new volume.
Type
```
add disk 3
```
to add disk 3 as the new disk that will become the mirror.

To add a mirrored disk to an existing disk, perform the following steps:

Download and install the DiskPart utility from the Microsoft Web site.
Go to Start, Run, then type
```
cmd
```
to start a command-line session.
Type
```
diskpart
```
to start a DiskPart session.

Type

list disk

to list the current disks. The list will look like

   Disk ### Status Size  Free    Dyn  Gpt
   -------- ------ ----  ------- ---- --- 
   Disk 1   Online 28 GB 6621 MB *
   Disk 2   Online 12 GB 12 GB   *
   Disk 3   Online 29 GB 29 GB   *

Type
```
select disk 1
```
to select disk 1 as the existing disk that you want to mirror.

Type

list partition

to list the current partitions. The list will look like

   Partition ### Type         Size    Offset
   ------------- ------------ ------- ------ 
   Partition 1   Dynamic Data 10 GB   32 KB
   Partition 2   Dynamic Data 6001 MB 10 GB
   Partition 3   Dynamic Data 6001 MB 16 GB
   Partition 4   Dynamic Data 6621 MB 21 GB

Type
```
select partition <partition number>
```
to select the partition for which you want to add a mirrored disk.
Type
```
add disk <disk number>
```
to add a new disk, which will mirror the disk you selected in Step 5.

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