Win 7 64gb SSD with 54.72 Primary Partition and 4.9 Recovery Partition. 28gb used. 26gb free. In order to take advantage of Garbage Collection and Trim do I need to create a separate partition for Garbage Collection or will the 26gb free space be used for trim and garbage collection? 54.72+4.9=59.6gb. What happened to the extra 4.4gb?