A tool for creating & managing GPT partitions.
parttool /dev/disk1 \ EFI ESP 100m \ SYS FuchsiaSystem 5g \ DATA FuchsiaData 50% \ BLOB FuchsiaBlob 50%
Size specifications accept k, m, and g for Kilobytes, Megabytes, Gigabytes respectively. A size expressed as a percentage is calcuated as a percentage of the volume remaining after constant sizes have been allocated.