Starting with the latest (19H1) test build of Windows 10 Insiders Preview 18312, Microsoft is introducing new ways to manage disk storage, going forward.
Windows Insiders in the Fast ring can now make use of new “reserving disk space” feature that Microsoft hoping will keep Windows 10 up to date without falling to insufficient storage space errors.
“Our goal is to improve the day-to-day function of your PC by ensuring critical OS functions always have access to disk space,” stated Donna Sarkar.
The new storage-focused features, knows as “Reserved Storage,” will set aside about 7 GB of disk space to be used to install updates smoothly.
With Reserved storage as Microsoft puts, all the updates, apps, temporary files, and caches will continue to operate in their own space and are less likely to take away from users valuable free space.
Microsoft said the reserved storage feature will come pre-installed with all PCs that ships with 19H1, or on PCs — 19H1 was clean installed.
“Windows 10 19H1, which may be “Windows 10 1903″ should begin rolling out to mainstream users around April 2019.”
In addition to Reserved Storage, there are some other additional updates and improvements available as well in Build 18312, including:
New Reset this PC UI
Microsoft has added a new user interface to the “Reset this PC,” that’s now more consistent across devices even with different configurations.
Just a few clicks to complete it under Settings -> Update & Security -> Recovery.
The new UI can be seen in the image above.
FLS Slot Limit Raise
Starting with this build, Microsoft has greatly increased the per-process Fiber Local Storage (FLS) slot allocation ceiling, that now allows loading thousands of unique plugins into the Digital Audio Workstations ( DAWs).
Beyond musicians, FLS Slot limit increase will also potentially impact other applications that dynamically loads thousands of unique DLLs that are statically-linked to Visual C++ runtimes, or allocate FLS slots.
Improvements to WSL Command Line Tool
Another addition into this build is the new command-line options to the Windows Subsystem for Linux command-line tool.
Here is a summary of changes in the WSL command line tool (wsl.exe):
- Consolidated command line options now allow managing WSL distros included in “wslconfig command line” tool.
- Import a distro tar file as a new distribution for easy sideloading including to non-system drives with the “–import” option. Users can define distribution registry to the location of their choice including non-system drives.
- Export WSL distribution to a rar file using “—export” option. The distro will export to default downloads location.
For known issues, plus some other additional updates, check out the full changelog of today’s build 18312 quoted under:
General changes, improvements, and fixes for PC
- We fixed an issue where the Network shares page in File Explorer used black text in dark theme.
- We fixed an issue impacting Microsoft Edge reliability in the last few builds.
- We fixed an issue where USB printers may appear twice in Devices and Printers under Control Panel.
- We fixed an issue where the console would lose color when spawning a new Command Prompt.
- Following up on our work earlier this release to make the console scrollbar dark when dark theme is enabled, the title bar will also now bar dark (if you haven’t chosen in Settings to use your accent color in the title bar).
- We’re adding a group policy for disabling acrylic on the sign-in screen. This can be found in Group Policy Editor under Administrative Templates > System > Logon > “Show clear logon background”.
- We fixed an issue where custom desktop/Lock screen images deployed by a runtime provisioning package would be removed after Windows Update.
- We fixed an issue where the shadow behind a flyout might zoom in after the flyout appeared.
- We fixed an issue where, if enabled, the Windows Start Up Sound
might notwouldn’t play after turning on from shutdown or after updating.
- We fixed an issue where the File Properties dialog wouldn’t show the full timestamp if “Conversational format” was selected for the Date Modified column in File Explorer.
- We fixed an issue where the hyperlink colors needed to be refined in Dark Mode in Sticky Notes if Insights were enabled.
- If you were experiencing Sticky Notes stuck on Loading with Build 18309, please check the Microsoft Store for Sticky Notes version 3.5.4.
- The Windows Security app may show an unknown status for the Virus & threat protection area, or not refresh properly. This may occur after upgrade, restart, or settings changes.
- Launching games that use anti-cheat software may trigger a bugcheck (GSOD).
- Clicking your account in Cortana Permissions doesn’t bringing up the UI to sign out from Cortana (if you were already signed in) for some users in this build.
- Creative X-Fi sound cards are not functioning properly. We are partnering with Creative to resolve this issue.
- When attempting to update this build some S Mode devices will download and restart, but fail the update.
- Night light functionality is impacted by a bug in this build. We’re working on a fix, and it will be included in an upcoming build.
- When you open Action Center the quick actions section may be missing.
- Clicking the network button on the sign-in screen doesn’t work.
- Some text in the Windows Security app may not currently be correct, or may be missing. This may impact the ability to use some features, such as filtering Protection history.
- Windows feature update may fail but show up as a successful update in Windows Update history page. If this happens you will see more than one successful install for the same update in the history page.
- Users may see a warning that their USB is currently in use when trying to eject it using File Explorer. To avoid this warning, close down all open File Explorer windows and eject USB media using the system tray by clicking on ‘Safely Remove Hardware and Eject Media’ and then selecting the drive to eject.
- When performing Reset this PC and selecting Keep my files on a device that has Reserved Storage enabled the user will need to initiate an extra reboot to ensure Reserved Storage is working again properly.
- There is an issue impacting a small number of users enrolled in Microsoft Intune where they may not receive policies. Those policies are not applied and left in “pending” state on the server. The workaround is to go to Settings/Accounts/Access work or school and “Disconnect” your Azure AD account and then re-enroll.
- [ADDED] We’re investigating issues with Windows Sandbox not loading on PCs with multiple GPUs.
- [ADDED] In some cases, launching Centennial apps will cause a bindflt.sys bugcheck (GSOD).
- [ADDED 1/10]: Some Realtek SD card readers are not functioning properly. We are investigating the issue.
Known issues for Developers
- If you install any of the recent builds from the Fast ring and switch to the Slow ring – optional content such as enabling developer mode will fail. You will have to remain in the Fast ring to add/install/enable optional content. This is because optional content will only install on builds approved for specific rings.