New answers tagged size
Another possibility, which is remote in my judgement: your original directory and the directories residing inside it have had a lot of files added and deleted. In most filesystems, directories only grow in size, never shrink. The missing space could constitute unused slots in directories.
Several possibilities. a) scp may not have copied hidden files/directories; hard to tell w/o knowing your data, seeing how you invoked scp. b) another scenario will be that the filesystems use different block-sizes, and du doesn't add up the files byte sizes, it measures occupied disk space.
First, my thanks to all who contributed. I learned a few useful things. Still, my experience is that most of these answers are somewhat incomplete, at least where CD and DVDs are concerned, notably regarding whether they are available to normal users rather than restricted to the superuser. This is based on tests on my Linux Mageia 2. Commands intended for ...
You need Virtual Box guest extensions. In order to install them you first need the RPMForge repository added for yum, follow these instructions: http://wiki.centos.org/AdditionalResources/Repositories/RPMForge#head-5aabf02717d5b6b12d47edbc5811404998926a1b Then run this command in a terminal: yum install dkms
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