
As we can see from the picture above, the built-in Windows Disk Management tool can only shrink a partition to the point it encounters an unmovable file.

In fact, "size of available shrink space in MB 0" is caused by unmovable files. Cause and Solution to Size of Available Shrink Space 0 Cause Have you ever encountered such a situation? Do you know how to overcome? If you are still working hard to find a solution, this post should be very helpful. In this case, we are unable to continue shrinking C drive. However, while using it to shrink the C drive, sometimes the size of available shrink space in MB is 0 (see the following picture below). As we all know, this tool is rather easy to use and can finish tasks without rebooting. Today many users use Disk Management tool to help simple disk maintenance.

Next, I pressed "Yes" which is suppose to migrate the 89372 MB to the slow tier.īut then it failed and I get this message "Convert to reserve failed, unable to shrink volume". Then I pressed "Remove" which removes the Boot Drive so it separates the SSD or the "Fast" Drive.

I press "Remove fast media" which allows to separate the SSD from the HDD. I don't know if I needed to to remove 2gb of meta data from the C: drive but I don't know how and I don't know what to do anymore. It says "convert to reserve failed, unable to shrink volume." I tried manually shrinking to the cap and it still didn't worked. I'm trying to untier my drives by using "remove fast media" but It won't let me.
