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On Wed, 03 Aug 2005 10:23:39 +0000 Paul Sutton wrote: > Hi > > I am trying to work out how my digital camera displays a > 512 MB sd card with size of 478 MB after formatting > > this gives a difference of 34 MB, I know there are differences, in > actual size and formatted size just can't remember how things are > calculated, can anyone help please. > > thanks > > Paul It is, in fact, going to be part-and-parcel of both Jeremy and James' replies. 512 decimal megabytes = 512000000 bytes. 512000000 bytes = 488.28125 binary/computer megabytes. The difference between 488.28125 and your reported 478 will be down to the filesystem overheads (FAT16/32) used on the device. Grant. -- Artificial intelligence is no match for nuratal stidutipy. -- The Mailing List for the Devon & Cornwall LUG Mail majordomo@xxxxxxxxxxxxx with "unsubscribe list" in the message body to unsubscribe. FAQ: www.dcglug.org.uk/linux_adm/list-faq.html