21 May 2019
Microsoft has increased the minimum storage requirement for Windows 10 May 2019 update. It has reflected the change on the official Hardware Dev Center website without mentioning the reason behind the change. As per the change, Windows 10 May 2019 (version 1903) update will require minimum storage of 32GB for both 32-bit and 64-bit versions.
Prior to this, Microsoft has a requirement of 16GB and 20GB for 32-bit and 64-bit Windows 10 October 2018 update respectively. The exact reason behind such a difference is unknown but it is expected to be due to the new Reserved storage feature in the upcoming update. It will basically take 7GB of storage space which will be reserved for system updates.
Even though the storage requirement has now been increased and almost doubled, it should not be an issue for the majority of the users. Almost all the Windows 10 PCs and laptops come with plenty of storage which runs into terabytes. It means users should have a lot of storage which will make 32GB requirement a small one.
Additionally, it has been spotted that the Windows 10 May 2019 update will not get installed if the user is using SD cards or USB flash drives. The new version is currently available via Insider and Release Preview channels. The public rollout is expected to happen anytime next month.