The more users install the new Windows 10 April 2018 Update, the bigger the number of bugs making the rounds. This time, an issue is triggering low disk space warnings on systems upgraded to the latest OS version due to what appear to be incorrectly assigned drive letters for recovery drives.

Several posts on Microsoft’s Community forums indicate that Windows 10 has started notifying users of low disk space on a separate partition that’s just 449 MB in size and which wasn’t visible before the upgrade.

By the looks of things, this is the recovery partition which for some reason was assigned a letter during the upgrade, thus becoming listed in File Explorer and causing notifications of low space.

As with any other recovery drive, opening the partition leads users to an empty folder, and some go as far as formatting it completely.

How to fix the bug

The correct fix, however, is to remove the assigned drive letter and hide the partition, thus keeping the recovery drive without having it listed in File Explorer and prompting the low disk warnings.

To do this, you can turn to diskpart for the whole thing. DiskPart can be launched by opening a Command Prompt window with administrator privileges (click the Start menu, type CMD and then right-click the result > Run as administrator) and then typing diskpart in the command line utility.

Afterward, run the following commands one by one (make sure you check the volume and the letter commands to match your configuration):

list volume

select volume 3

remove letter="E"