Help Center/ Workspace/ User Guide (Administrators)/ Desktop Pools/ Images/ Rebuilding a System Disk/ Rebuilding System Disks in a Desktop Pool
Updated on 2026-05-25 GMT+08:00
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Rebuilding System Disks in a Desktop Pool

Scenarios

If a purchased desktop pool needs to be restored to the initial template or desktop pool applications and patches need to be updated in batches, the administrator can reinstall or change the operating system.

Impact on the System

System disk rebuilding will force stop the desktop and delete the system disk snapshots, so back up your data in advance. In addition, system disk rebuilding will reset the abnormally sequenced drive letters of data disks.

Constraints

When rebuilding the system disk, if the desktop pool uses a private image, ensure that the private image still exists.

Prerequisites

The system disk can be rebuilt only when the running status of a desktop pool is running or shutdown.

Procedure

  1. Log in to the console.
  2. In the navigation pane, choose Desktops > Desktop Pools.

    The Desktop Pools page is displayed.

  3. You can access the page for rebuilding the system disk of a desktop pool in either of the following ways:

    • Method 1:
    1. Locate the desktop pool whose system disk is to be rebuilt, choose More > Rebuild System Disk in the Operation column.
    2. The Rebuild System Disk page is displayed.
    • Method 2:
    1. On the desktop pool page, click the name of the desktop pool whose system disk is to be rebuilt. The basic information page of the desktop pool is displayed.
    2. Click Rebuild the system disk on the right of the Image column in the desktop pool information. The dialog box of rebuilding a system disk is displayed.

  4. Configure the system disk to be rebuilt, as shown in Table 1.

    Table 1 Basic configurations

    Parameter

    Description

    Example Value

    Applied To

    Set the applicable scope as required.

    • Only added desktops:

      Applied only to new desktops that are automatically or manually added to the desktop pool

    • Added and idle desktops:

      Applied to new desktops that are automatically or manually added to the desktop pool and idle desktops (those not assigned to users) in the desktop pool

    • Added and existing desktops:

      Applied to new desktops that are automatically or manually added to the desktop pool and all existing desktops in the desktop pool

    -

    Current Image

    Image currently used by the desktop pool.

    Windows Server 2019 Standard (80G_Workspace)

    Rebuilding Method

    Reinstall OS: The original desktop image is used to rebuild the system disk.

    Reinstall OS

    OS

    Select Windows or Linux as required.

    Windows

    Disk Encryption (Optional)

    Select Encryption to go to the encryption page.

    1. Select the Select existing key option.
      1. Select the required key from the Key Name drop-down list.
      2. Click OK.
    2. Select Enter key ID.
      1. Enter a key ID in the text box.

        You can view the key ID in the key list.

      2. Click OK.

    A KMS key can be custom, default, or shared.

    • Shared keys: You can use DEW to create grants that allow other accounts to share your keys. For details, see Creating a Grant.
    • Custom keys: You can select an existing key or create a key. For details about how to create a custom key, see Creating a Custom Key.
    • Key sharing via resources: You can use Resource Access Manager (RAM) to share your keys with other accounts via resource sharing. For details, see Sharing Your Resources.
      NOTE:

      For yearly/monthly cloud desktops, you cannot use RAM to share keys across projects under the same account.

    -

    Restart

    Determine when to start rebuilding the system disk after clicking OK in 5.

    • Immediately
    • In 1 minute
    • In 5 minutes
    • In 10 minutes
    • In 15 minutes

    Immediately

    Notification

    Select whether to notify users that the system disks of their desktops need rebuilding. After a user logs in, a notification message is displayed on the desktop.

    Notification

    Notification Message

    After selecting Enable for Notification, you can customize the content displayed in the pop-up window on the desktop.

    -

    To confirm the operation

    Enter YES or click Auto Enter.

    YES

  5. Confirm the rebuilding. The selected rebuilding method will be used.
  6. (Optional) Wait until the desktop status becomes Running. Contact the user to check and change the disk status of the desktop by referring to How Do I Do If Data Disks of a Windows Desktop Cannot Be Found After Recomposing the System Disk?

    This operation is needed only for rebuilding the system disk of a Windows desktop.

Parent Topic: Rebuilding a System Disk