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。
Linux 大於 2T 的分割磁區格式複製
sgdisk 在 Debian 安裝方式：
- apt-get install gdisk
sgdisk 說明
- sgdisk - Command-line GUID partition table (GPT) manipulator for Linux and Unix
- sgdisk: GPT fdisk is a text-mode menu-driven package for creation and manipulation of partition tables.
sgdisk 的分割區格式複製、還原
- sgdisk --backup=sda.table /dev/sda # 將格式存到 sda.table file
- sgdisk --load-backup=sda.table /dev/sdb # 將 sda.table 格式複製到 sdb (sdb = sda)