WARNING: GPT (GUID Partition Table) detected on '/dev/sda'! The util sfdisk doesn't support GPT. Use GNU Parted.

# partition table of /dev/sda
unit: sectors

/dev/sda1 : start=        1, size=617142413, Id=ee
/dev/sda2 : start=617142414, size=  7999985, Id=82
/dev/sda3 : start=    13507, size=617128907, Id=ef, bootable
/dev/sda4 : start=        0, size=        0, Id= 0