K3b sees 4.7GB DVD+R as 4.4 GB

Peter Arremann loony at loonybin.org
Sat Jan 14 06:46:10 UTC 2006


On Saturday 14 January 2006 01:36, Arthur Pemberton wrote:
> Hello. I want to burn to dvd some data which is just a tad over 4.4GB. I
> have some Sony 4.7GB DVD+R blank media. However K3b insists that the media
> is two small for the data. Anyone has an idea what is actually going on?
>
> Thank you.
marketing at its finest... the 4.7GB are marketing Giga Bytes - with a base of 
1000 rather than 1024. Some people us GiB to indicate that they really mean 
1024 base. For GB to GiB you have roughly -7.5% difference. 

4.7 GB / 1024 / 1024 / 1024 * 1000 * 1000 * 1000 = 4.38 GiB

You'll see the same with virtually all storage devices - including harddisks. 
Read the specs for your harddisk and then check with fdisk or something like 
that how big it really is :-) 

Peter.




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