Originally posted by: mobobuff
Also, many hard drive manufacturers label the size of their hard drives on the premise of actual scientific math. Meaning a Gig equals 1000 Megs, and 1 Meg equals 1000 Ks, and 1 K equals 1000 bytes. However, math is for losers and lower life-forms, and in the COMPUTER world (the one that matters), a Gig equals 1024 Megs, and a Meg is 1024 Ks and so on. So any prefix is 1024 units of the prefix below it.
So what that means is that 160 Gigabytes may actually equate to a smidge over 156 Gigabytes. Which doesn't exactly make up for a 19 Gig absence, but that could be due to a partition you don't know about, Windows XP often makes them during installation without really telling you. And perhaps the drive was actually calibrated wrong in the factory.