How to change the Docker image directory on Windows 10

Scenes

The Windows 10 wsl 2 version of Docker is installed on the C drive by default, and the data is stored in C:\Users\current user name\AppData\Local\Docker\wsl\data\ext4.vhdx For a long time, the space usage of the C drive will increase. Come bigger, to solve this problem we can move data to other hard drive

Docker switch data storage location operation

1. stop Docker


2. Open the cmd window and check the stop status

   C:\Users\Administrator> wsl --list -v
     NAME                   STATE           VERSION
   * docker-desktop         Running         2
     docker-desktop-data    Running         2

3. Backup and export existing data

   Because the backup command does not output a progress bar, you can first check the used space (the location is at the beginning of the article), and have an estimated consumption time in mind when backing up

   C:\Users\Administrator> wsl --export docker-desktop-data "F:\Docker\wsl\data\docker-desktop-data.tar"
   C:\Users\Administrator> dir F:\Docker\wsl\data\
   
   
       目录: D:\Docker\wsl\data
   
   
   Mode                LastWriteTime         Length Name
   ----                -------------         ------ ----
   -a----       2020/11/25      8:54     2159349760 docker-desktop-data.tar

   Command description: Back up the existing data to the F:\Docker\wsl\data\ directory and name it docker-desktop-data.tar

4. delete old data

   C:\Users\Administrator> wsl --unregister docker-desktop-data
   正在注销...
   C:\Users\Administrator> wsl --list -v
     NAME              STATE           VERSION
   * docker-desktop    Stopped         2

5. Import data to new disk

   C:\Users\Administrator> wsl --import docker-desktop-data "F:\Docker\wsl\data" "F:\Docker\wsl\data\docker-desktop-data.tar" --version 2
   C:\Users\Administrator> wsl --list -v
     NAME                   STATE           VERSION
   * docker-desktop         Stopped         2
     docker-desktop-data    Stopped         2

   Description: Import the backup data to a new virtual disk, and specify the storage path of the virtual disk as F:\Docker\wsl\data . After the import is completed, there will be a virtual disk path of ext4.vhdx in this directory.

6. start Docker

   Find docker in the start menu and click start

   The last backup file F:\Docker\wsl\data\docker-desktop-data.tar can be deleted according to the situation