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resizing root partition

Date: Thursday 20 September 2012
Changed: Friday 21 September 2012

Gradually the root partition of my PC/server filled up and became too small.

So, how to resize a root partition?

Luckily I had a separate /home partition which was very big and it was placed after the root partition.

Resizing the home partition could even be done on a live system if you're re not logged in as user but as root.

But I couldn't find a way to make KDM let me login as root in a graphical environment so I decided to use the parted USB-live-CD.

This Boot-USB-stick provided a complete graphical gparted partition tool so I could easily shrink and move the home partition and after that make the root partition bigger. It took about 6 hours to move 80GB of the home partition.

The root partition is now 200GB and the /home is 400GB