I just copied my old harddisk (60G) to a new one (80G), using the g4u tool, which lets you boot from either a CD or a floppy and then copy a whole disk either onto another one or an image server. This will just use 60G on my new harddisk, but the following change that:
Boot into single user mode
Run fdisk on the new harddisk and increase the partition size. Make sure the start address is the same as of the old partition.
Run resize2fs to extend the etc3 partition.
That's it. You are good to go. NO data loss, nothing!
