My 300GB (disk 0) Drive shows total Partition sizes adding up to 550GB (I only have one drive). I had bought a CD HDD Caddy to clone my Notebook drive as a backup...but found I had 5 partitions from an earlier use of a Recovery Partition Creation Software exercise. When I deleted and combined two of the partitions so as to have 4 partitions left for a successful Acronis clone, it appeared that my drives partitions added up to almost double my drives capacity (this double capacity was the same even before partition reduction procedure). Everything is working great but it is bugging me that this is appearing as it is in Disk Management this way, and would like it to show properly. Many Thanks in advance for a reply!