Rebuilding a System Disk

Scenarios

If a purchased desktop needs to be initialized or desktop applications and patches need to be updated, you can rebuild or change the system disk.

Impact on the System

If you rebuild the system disk, the data (such as the desktop and favorites) on the system disk will be lost. If the data is needed after rebuilding, ask the user to back up the data in advance. Rebuilding system disks does not affect data disks.

Constraints

When rebuilding the system disk, if the desktop 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 is running or stopped.

Procedure

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

   The Desktops page is displayed.

3. You can rebuild the system disk of one desktop, or system disks of multiple desktops in batches.
   • To rebuild the system disk of one desktop, perform 4 to 6.
   • To batch rebuild the system disks of multiple desktops, perform 7 to 12.

4. Select the desktops whose system disks are to be rebuilt, and choose More > Image Management > Recompose System Disk in the Operation column.

   The page for rebuilding system disks is displayed.

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

   Table 1 Basic configurations

   Parameter	Description	Example Value
   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
   (Optional) Encrypt the disk.	Select Encryption to go to the encryption page. Select Select existing key. Select the required key from the Key Name drop-down list. Click OK. Select Enter key ID. Enter a key ID in the text box. You can view the key ID in the key list. 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: If disk encryption is enabled during system reinstallation or system switching, the desktop disk of the new system will be encrypted by default.	-
   Restart	Determine when to start rebuilding the system disk after clicking OK in 6. Immediately In 1 minute In 5 minutes In 10 minutes In 15 minutes	Immediately
   User Notification	Yes: A notification message is displayed on the desktop after the user logs in. If you select Yes, you can customize the content displayed in the pop-up window on the desktop. No: The system does not display any notification message and directly completes rebuilding.	-
   To confirm the operation	Confirm the operation, and enter YES or click Auto Enter.	Auto Enter

6. Click OK. The desktop system disk will be rebuilt.
7. On the Desktops page, batch select the desktops whose system disks are to be rebuilt, and choose More > Image Management > Recompose System Disk above the list.
8. Confirm the operation, and enter YES or click Auto Enter.
9. Click OK.
10. Confirm the target desktops. The administrator can remove undesired desktops.
11. On the page for rebuilding system disks, configure the system disk parameters, as shown in Table 2.

    Table 2 Basic configurations

    Parameter	Description	Example Value
    Rebuilding Method	Reinstall OS: The original desktop image is used to rebuild the system disk.	Reinstall OS
    Disk Encryption Method	Same as before: After the OS is rebuilt or switched, the original encryption attribute, either encryption or no encryption, remains unchanged. Encryption: If the original disk is encrypted, the disk remains encrypted after the OS is rebuilt or switched. If the original disk is not encrypted, the disk will be encrypted after the OS is rebuilt or switched. No encryption: If the original disk is encrypted, the disk will no longer be encrypted after the OS is rebuilt or switched. If the original disk is not encrypted, the disk will remain unencrypted after the OS is rebuilt or switched.	-
    Restart	Determine when to start rebuilding the system disk after clicking OK in 6. Immediately In 1 minute In 5 minutes In 10 minutes In 15 minutes	Immediately
    User Notification	Yes: A notification message is displayed on the desktop after the user logs in. If you select Yes, you can customize the content displayed in the pop-up window on the desktop. No: The system does not display any notification message and directly completes rebuilding.	-
    To confirm the operation	Confirm the operation, and enter YES or click Auto Enter.	Auto Enter

12. Click OK.
13. (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 when you rebuild the system disk of a Windows desktop.