Spelunker's right. The disconnect is because of 1 kilobyte being 1024 bytes (and 1 megabyte being 1024 kilobytes, and so on) in operating systems--they work in binary, which is a 2-base system (1024 being 2^10), while the manufacturers tend to use the prefixes as meaning multiples of 1,000 bytes (so 1 KB = 1,000 bytes, 1 MB = 1,000,000 bytes, etc.). For instance, my 1TB drive actually has 931 gigabytes. If I open the properties, it has a line saying: "Capacity: 1,000,194,015,232 bytes 931 GB". It is confusing for the consumers, but that's how it's always been. Most just accept that drives tend to have less than what is advertised, but if you aren't aware of the discrepancy beforehand, you can end up in situations like yours.
Earthen Ring-EU:
Taelas -- 60 Human Protection Warrior; Shaleen -- 52 Human Retribution Paladin; Raethal -- 51 Worgen Guardian Druid; Szar -- 50 Human Fire Mage; Caethan -- 60 Human Blood Death Knight; Danee -- 41 Human Outlaw Rogue; Ainsleigh -- 52 Dark Iron Dwarf Fury Warrior; Mihena -- 44 Void Elf Affliction Warlock; Chiyan -- 41 Pandaren Brewmaster Monk; Threkk -- 40 Orc Fury Warrior; Alliera -- 41 Night Elf Havoc Demon Hunter;
Darkmoon Faire-EU:
Sieon -- 45 Blood Elf Retribution Paladin; Kuaryo -- 51 Pandaren Brewmaster Monk
Taelas -- 60 Human Protection Warrior; Shaleen -- 52 Human Retribution Paladin; Raethal -- 51 Worgen Guardian Druid; Szar -- 50 Human Fire Mage; Caethan -- 60 Human Blood Death Knight; Danee -- 41 Human Outlaw Rogue; Ainsleigh -- 52 Dark Iron Dwarf Fury Warrior; Mihena -- 44 Void Elf Affliction Warlock; Chiyan -- 41 Pandaren Brewmaster Monk; Threkk -- 40 Orc Fury Warrior; Alliera -- 41 Night Elf Havoc Demon Hunter;
Darkmoon Faire-EU:
Sieon -- 45 Blood Elf Retribution Paladin; Kuaryo -- 51 Pandaren Brewmaster Monk