Windows 10 Insider Preview Build 21286 Adds Storage Spaces and Disk Utility

Windows 10 Insider Preview Build 21286

Microsoft has released Windows 10 Insider Preview Build 21286 to Windows Insiders in the Dev Channel. In addition to the news and interests feature, the Redmond-based software giant has provided an ability to create and manage storage spaces from within the Settings app. You will be able to create storage pools, storage spaces including the ability to add and remove disks. You can also optimize pools, which provides an accessible and modern experience clubbed with other storage features.

To work with storage spaces, you should navigate to Settings | System | Storage and select the “Manage Storage Spaces” option located under “More storage” settings.

Storage Spaces

Microsoft has pushed this new feature to a small subset of Windows Insiders in the Dev channel. The purpose is to identify issues that could impact performance and reliability. If you are unable to view the Storage Spaces feature, you will receive the update within the next month.

The Windows 10 Insider Preview Build 21286 has introduced new file system command-line tool named DiskUsage. The disk utility enables users to view and query disk space usage via the command line. You will be able to keep track of files and directories that are consuming excessive hard drive space.


The DiskUsage automatically scans the relevant directory recursively with detailed information pertaining to each subfolder. Moreover, the tool also provides support for extensive filtering and output customization options.

If you type diskusage /d:1, Wthe system returns the used space under each folder of the current active directory. In this case, it’s C drive. You will be able to know more information if you input diskusage /> command. The diskusage functionality is working when we tested the feature.

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The Windows 10 Insider Preview Build 21286 has added an option, which enables you to run any specified Linux command on startup of a WSL distribution. You can edit the /etc/wsl.conf file in your distribution and add an option titled “command” under a section titled “boot”. It is to be noted that this command will run whenever your specific WSL distribution starts up. WSL distributions will continue to run for a few minutes even after the last Linux process is closed. You can verify whether your WSL distro is running with the help of wsl–list–verbose command. You can also manually shut down all WSL distributions using wsl–shutdown command.

Anand Narayanaswamy is the editor-in-chief of Netans. He was recognized as a Microsoft Most Valuable Professional (MVP) for 9 years (2002 to 2011) and again as a Microsoft MVP in Surface under Windows and Devices in January 2024. He worked as a Chief Technical Editor with ASPAlliance and was part of ASPInsider program. Anand has published several articles and reviews related to various software and hardware products for various software and technology related websites. He is also active on social media and also participates as an Influencer for various brands. Anand can be reached at