列出系統磁盤
fdisk -l
有未使用磁盤/dev/xvdb
對改磁盤進行操作
fdisk /dev/xvdb
這時候出現可輸入要對磁盤操作命令
Command (m for help):
輸入m查看可選命令：
Command action
a toggle a bootable flag
b edit bsd disklabel
c toggle the dos compatibility flag
d delete a partition 刪除分區
g create a new empty GPT partition table
G create an IRIX (SGI) partition table
l list known partition types 列出分區類型
m print this menu 幫助
n add a new partition 添加分區
o create a new empty DOS partition table
p print the partition table 顯示當前分區列表
q quit without saving changes 取消退出
s create a new empty Sun disklabel
t change a partition's system id 修改某一個分區的系統id
u change display/entry units
v verify the partition table
w write table to disk and exit 保存退出
x extra functionality (experts only)
添加一個分區：
Command (m for help):
n （輸入n添加分區）
Command action
e extended
p primary partition (1-4)
p（輸入p添加主分區）
Partition number (1-4):
1（輸入1，指定第一塊分區）
First cylinder (1-33436, default 1):
（回車，使用默認值）
Using default value 1
Last cylinder or +size or +sizeM or +sizeK (1-33436, default 33436):
+10G（輸入+10G，分區大小）
Command (m for help):
p （列出分區）
Disk /dev/xvdb: 214.7 GB, 214748364800 bytes
224 heads, 56 sectors/track, 33436 cylinders
Units = cylinders of 12544 * 512 = 6422528 bytes
Device Boot Start End Blocks Id System
/dev/xvdb1 1 1558 9771775+ 83 Linux
刪除分區：
Command (m for help): p
Disk /dev/xvdb: 214.7 GB, 214748364800 bytes
224 heads, 56 sectors/track, 33436 cylinders
Units = cylinders of 12544 * 512 = 6422528 bytes
Device Boot Start End Blocks Id System
/dev/xvdb1 1 1558 9771748 83 Linux
/dev/xvdb2 1559 3116 9771776 83 Linux
Command (m for help):
d（刪除分區）
Partition number (1-4):
1（刪除第一個分區）
Command (m for help):
p（查看分區）
Disk /dev/xvdb: 214.7 GB, 214748364800 bytes
224 heads, 56 sectors/track, 33436 cylinders
Units = cylinders of 12544 * 512 = 6422528 bytes
Device Boot Start End Blocks Id System
/dev/xvdb2 1559 3116 9771776 83 Linux
修改磁盤類型
Command (m for help):
t（修改磁盤類型）
Selected partition 1（選擇磁盤1）
Hex code (type L to list codes):
L（查看可用類型）
0 Empty 1e Hidden W95 FAT1 80 Old Minix bf Solaris
1 FAT12 24 NEC DOS 81 Minix / old Lin c1 DRDOS/sec (FAT-
2 XENIX root 39 Plan 9 82 Linux swap / So c4 DRDOS/sec (FAT-
3 XENIX usr 3c PartitionMagic 83 Linux c6 DRDOS/sec (FAT-
4 FAT16 <32M 40 Venix 80286 84 OS/2 hidden C: c7 Syrinx
5 Extended 41 PPC PReP Boot 85 Linux extended da Non-FS data
6 FAT16 42 SFS 86 NTFS volume set db CP/M / CTOS / .
7 HPFS/NTFS 4d QNX4.x 87 NTFS volume set de Dell Utility
8 AIX 4e QNX4.x 2nd part 88 Linux plaintext df BootIt
9 AIX bootable 4f QNX4.x 3rd part 8e Linux LVM e1 DOS access
a OS/2 Boot Manag 50 OnTrack DM 93 Amoeba e3 DOS R/O
b W95 FAT32 51 OnTrack DM6 Aux 94 Amoeba BBT e4 SpeedStor
c W95 FAT32 (LBA) 52 CP/M 9f BSD/OS eb BeOS fs
e W95 FAT16 (LBA) 53 OnTrack DM6 Aux a0 IBM Thinkpad hi ee EFI GPT
f W95 Ext'd (LBA) 54 OnTrackDM6 a5 FreeBSD ef EFI (FAT-12/16/
10 OPUS 55 EZ-Drive a6 OpenBSD f0 Linux/PA-RISC b
11 Hidden FAT12 56 Golden Bow a7 NeXTSTEP f1 SpeedStor
12 Compaq diagnost 5c Priam Edisk a8 Darwin UFS f4 SpeedStor
14 Hidden FAT16 <3 61 SpeedStor a9 NetBSD f2 DOS secondary
16 Hidden FAT16 63 GNU HURD or Sys ab Darwin boot fb VMware VMFS
17 Hidden HPFS/NTF 64 Novell Netware b7 BSDI fs fc VMware VMKCORE
18 AST SmartSleep 65 Novell Netware b8 BSDI swap fd Linux raid auto
1b Hidden W95 FAT3 70 DiskSecure Mult bb Boot Wizard hid fe LANstep
1c Hidden W95 FAT3 75 PC/IX be Solaris boot ff BBT
Hex code (type L to list codes): 83（輸入要修改類型）
最後操作完了要記得輸入w命令保存操作
格式化磁盤
mkfs -t ext3 /dev/xvdb1
掛載磁盤
mkdir -p /data/dev/xvdb1
mount /dev/xvdb1 /data/dev/xvdb1
通過df命令可以查看當前系統磁盤掛載情況
取消掛載
umount /data/dev/xvdb1
