Why is defragmentation unnecessary?
I have an older hard drive that might be in need of defragging. how would I go about doing that with Ubuntu? I have done it in windows, but I have no idea on how to do it on Ubuntu. Thanks!
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If your hard disk is formatted in ext3 or ext4 there is no need to defragment.
If it is an NTFS partition, then you might need to defragment it but there are no defragmentation tools for linux as far as I know. In this case you have several options depending on your setup. Is it an external drive or an internal one?