GPT (GUID Partition Table)

Intel EFI/GPT parition tables
http://en.wikipedia.org/wiki/EFI_System_Partition
http://en.wikipedia.org/wiki/GUID_Partition_Table

GNU Parted is the solution
http://www.gnu.org/software/parted/features.shtml
The new version has support for Intel EFI/GPT partition tables.
http://www.gnu.org/software/parted/faq.html

GRML Live CD
http://www.grml.org/
http://grml.org/files/release-0.8/dpkg_list
It works with GNU Parted 1.7.1 which suports Intel EFI/GPT partition tables
http://www.gnu.org/software/parted/features.shtml

GParted Live CD
http://gparted.sourceforge.net