A fresh install of Win10 1903 and 1909 contains 7 GB of "Reserved Storage". This 7 GB is included in the Used space number of Disk Management. However, these boot disks, BootIt, GParted, Linux, Macrium, AOMEI and ACTIVE@ Disk Image do not see the 7 GB included in the Used space. They see 7 GB more Free space than Win10 sees. So these apps will let you resize the Windows partition to have less than 7 GB of Free Space. If you do this, Win10 will no longer boot and it can't be fixed. Resizing back to the original size doesn't help. I'm advised it's a Win10 bug.
Hi Brian. I installed another backup hard drive in one of my computers the other day, and initialised and formatted it with Disk Management. Then maybe a couple of days later, I noticed that it somehow had an extra 3GB hidden partition there. I thought, "Why is Windows 10 adding that there"? I only noticed it after I had added a lot of data to it. I removed it with MiniTool Partition Wizard. To this day, I don't know how it got there.
Hadron, When you setup that drive, did you create a single partition with no free space left over? Was there any data in the 3 GB partition?
Brian, I just went through the standard procedure. When Disk Management noticed a new drive, it offered to initialise it and format. I wanted a single partition drive. I used the maximum available, so I don't know what happened. I would have done it hundreds of times over the years. I have never seen that occur before.
windows 10 reserves at least 15gig (afair) space for its half year updates since 1903. if you have less then this it might refuse the next update, not the small ones, only the big one. https://www.windowscentral.com/windows-10-may-2019-update-raises-minimum-storage-requirement https://www.digitaltrends.com/computing/windows-10-update-space-requirements/ https://support.microsoft.com/en-us...ree-up-space-to-install-latest-feature-update (older)
For those who prefer to manage their own used/free space... https://pureinfotech.com/enable-reserved-storage-windows-10/ After the registry edit you have to wait until the next monthly Windows Cumulative update before you regain the space.
i dont care about such tweaks, maybe usefull for embedded win10 on sd-cards with 32gb. my win10 x86 here has 12gig (of 100gig space after moving, 50gig before moving to new hdd), win8 <20, win10 pro x64 <30 (all on 50gig/now 100gig partitions)
As a test I have Win10 Pro (64-bit) running in a 5.85 GB partition. There is only 116 MB of Free Space in the partition. I just wanted to see how low I could go. Totally impractical of course.
