|kimak, start your own thread.|
Hard handle to retype.
Your posts are hard to read. Unlike many websites we use proper grammar and punctuation.
Adding up file sizes doesn't account for slack space or the swap file. As was pointed out above there are hidden files that still take space.
Slack space is the difference between the actual file size and the space used on the drive. These two numbers will alrays be different due to wasted cluster space.
If you are using FAT32 on a fair sized partition the slack space can be substantial. Only one file can be written per cluster. So a 1kb file might use a 32kb cluster, when using FAT32 on a large partition. Below is a chart showing default cluster sizes in FAT32 & NTFS.
If you have many small files on a FAT32 partition it can waste much space.
for FAT32 are as follows:
512MB to 8,191MB = 4KB
8,192MB to 16,383MB = 8KB
16,384MB to 32,767MB = 16KB
Larger than 32,768MB = 32KB
NTFS - All partitions on a PC = 4KB default