I have 1 HDD. There are 4 partitions, C: (50GB), D: (30GB), E: (200GB), F: (186GB) All NTFS file systems. Today I managed to make D: active and change some drive letters, with Paragon Hard Disk Manager Server 2009. I format D: as FAT32 file system. After reboot, I cannot see any partitions except C: (the one my Windows is using). I reinstall Windows 7 and during installation, it tells me that I have 4 partitions but the total GB amount is over 600, which exceeds the actual, 466GB. Then I install Acronis Disk Director and it tells me I have 50GB for C: , 30GB for D: , 17 GB unallocated, 186 GB no drive letter , 186GB unallocated. It once again reports me the wrong values, I really don't know what to do at all. CMD diskpart.exe shows me: Partition 1 Primary 50GB Offset: 0GB Partition 2 Primary 30GB Offset: 50GB Partition 0 Extended 385GB Offset: 80GB Partition 3 Primary 184GB Offset: 2145GB I am trying to use R-Tools or Active Partition Recovery. But I don't know will they work. I'm not sure will formatting a partition as FAT32 affect the rest partitions. Perhaps Paragon HDM 2009 made a mistake. Everyone please help, I have a lot of important data in E: and F: Should I bring my computer to have some fix?