Desktop Images For Mac

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Docker Desktop stores Linux containers and images in a single, large “disk image” file in the Mac filesystem. This is different from Docker on Linux, which usually stores containers and images in the /var/lib/docker directory.

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Desktop Images For Mac

Where is the disk image file?

To locate the disk image file, select the Docker icon and thenPreferences > Resources > Advanced.

The Advanced tab displays the location of the disk image. It also displays the maximum size of the disk image and the actual space the disk image is consuming. Note that other tools might display space usage of the file in terms of the maximum file size, and not the actual file size.

If the file is too big

If the disk image file is too big, you can:

  • move it to a bigger drive,
  • delete unnecessary containers and images, or
  • reduce the maximum allowable size of the file.

Move the file to a bigger drive

Dynamic Desktop Images For Mac

To move the disk image file to a different location:

  1. Select Preferences > Resources > Advanced.

  2. In the Disk image location section, click Browse and choose a new location for the disk image.

  3. Click Apply & Restart for the changes to take effect.

Do not move the file directly in Finder as this can cause Docker Desktop to lose track of the file.

Delete unnecessary containers and images

Check whether you have any unnecessary containers and images. If your client and daemon API are running version 1.25 or later (use the docker version command on the client to check your client and daemon API versions), you can see the detailed space usage information by running:

Alternatively, to list images, run:

and then, to list containers, run:

If there are lots of redundant objects, run the command:

This command removes all stopped containers, unused networks, dangling images, and build cache.

It might take a few minutes to reclaim space on the host depending on the format of the disk image file:

  • If the file is named Docker.raw: space on the host should be reclaimed within a few seconds.
  • If the file is named Docker.qcow2: space will be freed by a background process after a few minutes.

Space is only freed when images are deleted. Space is not freed automatically when files are deleted inside running containers. To trigger a space reclamation at any point, run the command:

Note that many tools report the maximum file size, not the actual file size.To query the actual size of the file on the host from a terminal, run:

In this example, the actual size of the disk is 2333548 KB, whereas the maximum size of the disk is 64 GB.

Reduce the maximum size of the file

To reduce the maximum size of the disk image file:

  1. Select the Docker icon and then select Preferences > Resources > Advanced.

  2. The Disk image size section contains a slider that allows you to change the maximum size of the disk image. Adjust the slider to set a lower limit.

  3. Click Apply & Restart.

When you reduce the maximum size, the current disk image file is deleted, and therefore, all containers and images will be lost.

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Change your desktop picture from System Preferences

  1. Choose Apple menu  > System Preferences.
  2. Click Desktop & Screensaver.
  3. From the Desktop pane, select a folder of images on the left, then click an image on the right to change your desktop picture.

In macOS Mojave or later, you can also choose from Dynamic Desktop images, which automatically change throughout the day based on the time of day in your location.

Add a folder of your own images

To add a folder of your own images, click the add button (+) below the list of folders, then choose the folder that contains your images.

For best results, choose images that are stored on your startup disk. Images stored on a different disk might not load reliably after restarting your Mac, depending on how quickly the other disk becomes available after startup.

Change your desktop picture from Photos

  1. Open the Photos app.
  2. If you're using multiple displays, drag the Photos window over the desktop that you want to change.
  3. Control-click (or right-click) the image that you want to use.
  4. Select Share from the shortcut menu, then choose Set Desktop Picture from the submenu.

Change your desktop picture from the Finder

  1. From a Finder window or your desktop, locate the image file that you want to use.
  2. Control-click (or right-click) the file, then choose Set Desktop Picture from the shortcut menu. If you're using multiple displays, this changes the wallpaper of your primary display only.

If you don't see Set Desktop Picture in the shortcut menu, you should see a submenu named Services instead. Choose Set Desktop Picture from there.

Learn more

Desktop Images For March

  • If Location Services is turned off, Dynamic Desktop images change throughout the day based on the time zone selected in Date & Time preferences, not based on your specific location.
  • You can use these image formats for desktop pictures: PNG, JPEG, TIFF and PICT.
  • For more information about the settings in Desktop preferences, click in the corner of the Desktop preferences window.