To avoid confusion, let me assure you that this is not about decimal vs binary units.
When I partition a new disk, I like to have nice round figures show in Windows - like 50.0 GB, 300 GB and so on. When I specify the desired space in MBs, the resultant sizes show up as slightly less - like 49.9GB or 299GB.
I assume that this is due to partition metadata overheads stealing a tiny bit of space. I compensate for this by adding a few MBs during partitioning to get the results I want. For example, the C: drive (NTFS) in my boot SSD has 102405 (not 102400) MB in it, and it's displayed as 100 GB.
I've been doing this for a long time. However, I generally arrive at the amount to add by trial and error. Is there a way to calculate the precise amount of space that needs to be added for the purpose?
