Fdisk && Gdisk 指令
MBR 分割表請使用 fdisk 分割， GPT 分割表請使用 gdisk 分割！
Fdisk 磁區列表
fdisk -l /dev/sda
Fdisk 指令模式
fdisk /dev/sda
WARNING: The size of this disk is 2.2 TB (2199023255552 bytes).
DOS partition table format can not be used on drives for volumes
larger than (2199023255040 bytes) for 512-byte sectors. Use parted(1) and GUID
partition table format (GPT).
Welcome to fdisk (util-linux 2.23.2).
Changes will remain in memory only, until you decide to write them.
Be careful before using the write command.
命令 (m 以獲得說明)：m
命令動作
a toggle a bootable flag
b edit bsd disklabel
c toggle the dos compatibility flag
d delete a partition <==刪除一個partition
g create a new empty GPT partition table
G create an IRIX (SGI) partition table
l list known partition types
m print this menu
n add a new partition <==新增一個partition
o create a new empty DOS partition table
p print the partition table <==在螢幕上顯示分割表
q quit without saving changes <==不儲存離開fdisk程式
s create a new empty Sun disklabel
t change a partition's system id
u change display/entry units
v verify the partition table
w write table to disk and exit <==將剛剛的動作寫入分割表
x extra functionality (experts only)
Fdisk 刪除分割區
fdisk /dev/sda
WARNING: The size of this disk is 2.2 TB (2199023255552 bytes).
DOS partition table format can not be used on drives for volumes
larger than (2199023255040 bytes) for 512-byte sectors. Use parted(1) and GUID
partition table format (GPT).
Welcome to fdisk (util-linux 2.23.2).
Changes will remain in memory only, until you decide to write them.
Be careful before using the write command.
命令 (m 以獲得說明)：d
partition number 選擇要刪除分割代號
如已刪除完分割，按下 w 寫入硬碟
Gdisk
[root@study ~]# gdisk 裝置名稱
範例：由前一小節的 lsblk 輸出，我們知道系統有個 /dev/vda，請觀察該磁碟的分割與相關資料
[root@study ~]# gdisk /dev/vda <==仔細看，不要加上數字喔！
GPT fdisk (gdisk) version 0.8.6
Partition table scan:
MBR: protective
BSD: not present
APM: not present
GPT: present
Found valid GPT with protective MBR; using GPT. <==找到了 GPT 的分割表！
Command (? for help): <==這裡可以讓你輸入指令動作，可以按問號 (?) 來查看可用指令
Command (? for help): ?
b back up GPT data to a file
c change a partition's name
d delete a partition # 刪除一個分割
i show detailed information on a partition
l list known partition types
n add a new partition # 增加一個分割
o create a new empty GUID partition table (GPT)
p print the partition table # 印出分割表 (常用)
q quit without saving changes # 不儲存分割就直接離開 gdisk
r recovery and transformation options (experts only)
s sort partitions
t change a partition's type code
v verify disk
w write table to disk and exit # 儲存分割操作後離開 gdisk
x extra functionality (experts only)
? print this menu
Command (? for help):