"If you follow common partitioning advice, chances are
your disk uses several partitions. If you set the sizes incorrectly
or if your needs change, you may find yourself needing to resize
your partitions. To do so, you must familiarize yourself with the
requirements for resizing partitions and the tools that can do the
job. In many cases, resizing operations can proceed smoothly;
however, numerous stumbling blocks can cause problems for the
unwary, or even for those who take adequate precautions.
"This article first describes some of the underlying
capabilities and limitations of resizing tools, as well as the
preparatory steps you should take before you begin a resizing
operation. It then covers the common GParted partition resizing
tool (also known as Gnome Partition Editor).
"Note: For brevity, I use the term resize to refer to several
operations, including increasing the size of a partition, reducing
the size of a partition, and moving a partition. Sometimes one of
these operations is possible but others aren't. Some of these
operations are inherently riskier than others. When these
differences are important, I note that fact."