Unmount Cloud Disk Server

CDS

  • API Reference
    • Disk Related Interfaces
  • Dedicated Cluster Operation Guide
    • Charge
    • Create a dedicated cluster
    • Create Cloud Disk Server in Dedicated Cluster
    • Expand Dedicated Cluster
    • View Dedicated Cluster Information
    • What Is a Dedicated Cluster
  • Disk Operation Guide
    • Basic Operations
      • Create cloud disks
      • Disk encryption
        • Encrypt Data Disk and Snapshot
        • Encrypt System Disk and Image
        • Encryption Overview
      • Format cloud disks
        • Format Disk Partition on Linux System
        • Format Disk Partition on Windows System
        • Overview
      • Monitor alarm
      • mount Cloud Disk Server
      • Recycle bin
      • Release cloud disks
      • Tag Management
      • Unmount Cloud Disk Server
    • Billing management
      • Renew cloud disks
      • Shift Charge
    • Elastic Operations
      • Burst performance capability
      • Change cloud disk type
      • Performance preconfiguration
        • Use Performance Pre-Configuration
        • What Is Performance Pre-Configuration
      • Resize cloud disks
        • Expansion Overview
        • Extend Disk Partition on Linux Data Disk
        • Extend Disk Partition on Linux System Disk
        • Extend Disk Partition on Windows Data Disk
        • Extend Disk Partition on Windows System Disk
  • FAQs
    • Billing Problems
    • Common Questions Overview
    • Configuration-related questions
    • Fault-related questions
    • Performance-related questions
    • Security Problems
  • Peripheral Tools
    • CDSCMD Tool
      • Configure CDS CMD Tool
      • Install CDS CMD Tool
      • Operate Disk Using CDS CMD Tool
      • Overview
      • Tool Version History
  • Product Description
    • Application scenarios
    • Disk Status
    • Disk types
    • Product advantages
    • Product features
    • Product functions
    • Product Introduction
    • Type and Region
  • Product pricing
    • Disk charge type
      • Pay as you go
      • Subscription billing
    • Disk Expiration and Debt Reminder
    • Snapshot Charge Type
    • Universal Storage Capacity Package GSCP
  • Product Updates
    • Function Release Records
    • Product Announcement
      • Adjustments to prepay Disk renew, shift charge, and Unsubscribe Operations
  • Service Level Agreement (SLA)
    • Baidu Intelligent Cloud Block Storage Trusted Cloud
    • CDS Service Level Agreement (SLA V2_0)
  • Snapshot Operation Guide
    • Disk Snapshot
      • Automatic snapshot
      • Create a custom image
      • Create CDS disk from snapshot
      • Cross-region replication
      • Delete a snapshot
      • Manual Snapshot
      • Snapshot Rollback
      • Tag Management
    • Instance snapshots
      • Instance snapshots
    • Introduction to snapshot
      • Instructions for use
      • Snapshot chain
  • Typical Practices
    • Block Device Persistent Naming
All documents
menu
No results found, please re-enter

CDS

  • API Reference
    • Disk Related Interfaces
  • Dedicated Cluster Operation Guide
    • Charge
    • Create a dedicated cluster
    • Create Cloud Disk Server in Dedicated Cluster
    • Expand Dedicated Cluster
    • View Dedicated Cluster Information
    • What Is a Dedicated Cluster
  • Disk Operation Guide
    • Basic Operations
      • Create cloud disks
      • Disk encryption
        • Encrypt Data Disk and Snapshot
        • Encrypt System Disk and Image
        • Encryption Overview
      • Format cloud disks
        • Format Disk Partition on Linux System
        • Format Disk Partition on Windows System
        • Overview
      • Monitor alarm
      • mount Cloud Disk Server
      • Recycle bin
      • Release cloud disks
      • Tag Management
      • Unmount Cloud Disk Server
    • Billing management
      • Renew cloud disks
      • Shift Charge
    • Elastic Operations
      • Burst performance capability
      • Change cloud disk type
      • Performance preconfiguration
        • Use Performance Pre-Configuration
        • What Is Performance Pre-Configuration
      • Resize cloud disks
        • Expansion Overview
        • Extend Disk Partition on Linux Data Disk
        • Extend Disk Partition on Linux System Disk
        • Extend Disk Partition on Windows Data Disk
        • Extend Disk Partition on Windows System Disk
  • FAQs
    • Billing Problems
    • Common Questions Overview
    • Configuration-related questions
    • Fault-related questions
    • Performance-related questions
    • Security Problems
  • Peripheral Tools
    • CDSCMD Tool
      • Configure CDS CMD Tool
      • Install CDS CMD Tool
      • Operate Disk Using CDS CMD Tool
      • Overview
      • Tool Version History
  • Product Description
    • Application scenarios
    • Disk Status
    • Disk types
    • Product advantages
    • Product features
    • Product functions
    • Product Introduction
    • Type and Region
  • Product pricing
    • Disk charge type
      • Pay as you go
      • Subscription billing
    • Disk Expiration and Debt Reminder
    • Snapshot Charge Type
    • Universal Storage Capacity Package GSCP
  • Product Updates
    • Function Release Records
    • Product Announcement
      • Adjustments to prepay Disk renew, shift charge, and Unsubscribe Operations
  • Service Level Agreement (SLA)
    • Baidu Intelligent Cloud Block Storage Trusted Cloud
    • CDS Service Level Agreement (SLA V2_0)
  • Snapshot Operation Guide
    • Disk Snapshot
      • Automatic snapshot
      • Create a custom image
      • Create CDS disk from snapshot
      • Cross-region replication
      • Delete a snapshot
      • Manual Snapshot
      • Snapshot Rollback
      • Tag Management
    • Instance snapshots
      • Instance snapshots
    • Introduction to snapshot
      • Instructions for use
      • Snapshot chain
  • Typical Practices
    • Block Device Persistent Naming
  • Document center
  • arrow
  • CDS
  • arrow
  • Disk Operation Guide
  • arrow
  • Basic Operations
  • arrow
  • Unmount Cloud Disk Server
Table of contents on this page
  • Overview
  • Operation steps

Unmount Cloud Disk Server

Updated at：2025-11-03

Overview

You can detach a previously mounted disk.

Notes

When unmounting the data disk, you should note the following:

  • Windows system operation

    For Windows OS, it's recommended to suspend all file system read-write operations on this disk to ensure data integrity. Specific steps: sign in to the Windows system, navigate to Management Tool > Computer Management, and take the target disk offline.

  • Linux system operation

    For the Linux OS, you need to sign in to the instance and perform the umount /mnt command line operation on the disk. After the command is successfully executed, enter the console to unmount the disk.

Operation steps

Disks can be detached either via the Baidu Cloud Compute (BCC) console or by navigating to the Cloud Disk Server (CDS) in the console, accessing the disk list, and initiating detachment.

Note:

  • If you need to unmount a prepay disk, first perform Shift Charge to convert it to a postpaid disk before unmounting;
  • After mounting/unmounting operations, CDS cloud disks often experience drive letter drift. You can query the disk’s drive letter using the command: grep . /sys/block/vd*/serial. The drive letter obtained via this command is not affected by disk mounting/unmounting operations and remains permanent.

1. Sign in to the Baidu AI Cloud official website

Sign in to Baidu AI Cloud official website.

  • If you have not registered an account, you must first [register an account](UserGuide/Register an account.md#Register a Baidu Account).
  • If you have registered an account, you can directly sign in.

2. Enter the Disk List page

In the left navigation bar of the console page, select Baidu Cloud Compute > Baidu Cloud Compute (BCC) to enter the BCC console, then click Disks on the left to enter the disk list page; or directly select cloud disk server (CDS) from the left side of the console to enter the disk list page.

image.png

3. Select disk for unmounting

In the disk list, click the Unmount button in the action bar for the target disk.

image.png

Alternatively, click the disk name to access its details page, then select the Unmount button at the top of the page.

image.png

After clicking Unmount, please note the content in pop-up window. In Windows system, first take the disk to be unmounted offline; in Linux system, first perform the umount operation on the disk. For details, please refer to [Format Disk](CDS/Disk Operation Guide/Basic Operations/Format cloud disks/Overview.md).

image.png

4. Unmounting operation completed

Once you've completed these steps, the detachment process is finished.

Previous
Tag Management
Next
Billing management