Things evolve fast, but take time to be adopted... and understood.

1024 x 1024 = 1,048,576 bytes ?

How many bytes are  in a Megabyte ?

1024 x 1024 = 1,048,576 bytes ?

1000 x 1000 = 1,000,000 bytes ?

This question/confusion, which seems as old as technology itself, has finally gotten  a clear answer. 1998.

What is interesting is that very very few people know what a Mebibyte is. Do you?

And what's even more disturbing is that it is only with the latest version of Mac OS X Snow leopard a little bit earlier this year (end of August 2009) that at least one OS is using the correct computations (but not the real nouns) !

It means that a file of 1,000,000 bytes under Mac OS < 10.6 and any other current Operating System (Windows XP/Vista/Seven, Linux etc...) is reported as 976 KB but if you upgrade to Snow Leopard than it suddenly weights "more" : 1.0 MB.

... but dont be afraid, that means that your Hard Drive capacity has increased, too :

160 GB hard-drive gives you 152.6 GB under Windows XP but "enlarges" to 160 GB on Snow Leopard.

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About the author

Guillaume Arluison
Guillaume Arluison

Guillaume manages the Open Source Practice at blue-infinity.
He set up his first IT company with colleagues at the dawn of the Internet era, whilst finishing his studies in Computer Sciences and Human-Computer Interfaces. He then worked for several well known start-ups as well as many blue-chip companies providing his technical, consulting and managerial skills.