Linux 要做 Software RAID 等等，會需要做 Partation 的複製，一般都是用下述命令：
- sfdisk -d /dev/sda | sfdisk /dev/sdb
但是 sfdisk 切超過 2TB 的會有下述訊息：
sfdisk doesn't understand GUID Partition Table (GPT) and it is not designed for large partitions. In particular case use more advanced GNU parted(8).
This command however supports >2 TB partitions and LVM.
超過 2TB 的需要用 sgdisk。