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Mac OS X provides partition tool under applications | utilities. It support on-live adjust partition size. If you like CLI, there are corresponding CLIs to do so. Since Mac OS X is UNIX-like system, there is mount command. So, if you using the tool create a new slice or partition of disk, you can mount is as you home directory and it will cover the original home directory. It means that anything under original home will be invisible (no read and no write, they are just keep there -- you can use them once you umount the slice). All files to your home will go to the new home.
The other thing is that I don't think this could be a right way to keep data safe because backup tool -- time machine is there and EXT-HDD is very cheap. Further, if the MAC is down except HDD, you still get chance to use Firewire to get data out. |
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