How do I convert a basic disk to dynamic?

A. Windows 2000 introduces the idea of a dynamic disk needed for fault tolerant configurations. To convert perform the following:

  1. Start Computer Manager
  2. Expand Storage - Disk Management.
  3. Right click on the disk and select 'Upgrade to Dynamic Disk'
  4. Select the disks to upgrade and click OK
  5. A summary will be displayed.
  6. Click Upgrade
  7. Click Yes to the confirmation

Converting Basic disks to Dynamic disks don't require reboots - however any volumes contained on them after the conversion will generate a popup that basically says a re-boot is necessary before the volumes can be used. I generally say - NO, do not reboot - until all the volumes are identified and all the popups go away, then perform a single re-boot.

When you upgrade from basic to dynamic any existing partitions become simple volumes. Any existing mirrored, striped or spanned volumes sets created with NT 4.0 become dynamic mirrored, striped or spanned volumes respectively.

If you get a message that says you are out of space then you may not have enough unallocated free space at the end of the disk for the private region database that Dynamic disks use to keep volume information. To be Dynamic it needs about 1 MB of this space, sometime the space is not visible to the user in the GUI but it is still there.

You may not have the space if the partition(s) on the disk take up the entire disk and were created with Setup, an earlier version of NT or another OS. If partitions are created within Windows 2000 the space is reserved, partitions created with Setup will reserve the space in a later release.

To undo this conversion run Dmunroot.exe which will revert boot and system partition back to basic but all other volumes will be destroyed. Alternatively you should backup any data on the disk you wish to preserve, then delete all partitions - that should activate the menu choice "Revert to Basic Disk", the entire disk HAS to be unallocated or free space. Dmunroot is an unsupported utility available from Microsoft.

TAGS: Windows 8
Hide comments


  • Allowed HTML tags: <em> <strong> <blockquote> <br> <p>

Plain text

  • No HTML tags allowed.
  • Web page addresses and e-mail addresses turn into links automatically.
  • Lines and paragraphs break automatically.