Take the 2-minute tour ×  I have an Ubuntu 12.04 with an
external 1.5T disk (just for data). It is /dev/sdc1 seen below:
$ df -T Filesystem        Type      1K-blocks      Used
Available Use% Mounted on /dev/sda1         ext4     1451144932
27722584 1350794536   3% / udev              devtmpfs    6199460
4    6199456   1% /dev tmpfs             tmpfs       2482692
988    2481704   1% /run none              tmpfs          5120
0       5120   0% /run/lock none              tmpfs
6206724       284    6206440   1% /run/shm /dev/sdc1
fuseblk  1465135100 172507664 1292627436  12% /media/Elements
The thing is I would like to implement this rsync-based backup
strategy and I want to use my /dev/sdc1 external drive for that.
Since the guide mentioned above recommends placing the backup
directory in a separate partition I want to repartition the
/dev/sdc1 external hard disk but retain existing data in a
separate partition. E.g. split /dev/sdc1 into two partitions:
(i) one to be us