$ fdisk /dev/sdb
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 .
 
Device does not contain a recognized partition table
Building a new DOS disklabel with disk identifier 0x81cc782c.
 
Command (m  for help): n　　　　 // 新建
Partition  type :
   p   primary (0 primary, 0 extended, 4  free )
   e   extended
Select (default p): p　　　　 //p 为主分区，e为扩展分区
Partition number (1-4, default 1): 1　　　　 // 分区号，回车(默认)
First sector (2048-20971519, default 2048):　　　　 // 回车(默认)
Using default value 2048
Last sector, +sectors or +size{K,M,G} (2048-20971519, default 20971519):　　　　 // 回车(默认)
Using default value 20971519
Partition 1 of  type Linux and of size 10 GiB is  set
 
Command (m  for help): p　　　　 // 显示信息
 
Disk  /dev/sdb : 10.7 GB, 10737418240 bytes, 20971520 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical /physical ): 512 bytes / 512 bytes
I /O size (minimum /optimal ): 512 bytes / 512 bytes
Disk label  type : dos
Disk identifier: 0x81cc782c
 
   Device Boot      Start         End      Blocks   Id  System
/dev/sdb1 2048    20971519    10484736   83  Linux
 
Command (m  for help): l　　　　 // 列出所有类型
 
 0  Empty           24  NEC DOS         81  Minix / old Lin bf  Solaris
 1  FAT12           27  Hidden NTFS Win 82  Linux swap / So c1  DRDOS /sec (FAT-
 2  XENIX root      39  Plan 9          83  Linux           c4  DRDOS /sec (FAT-
 3  XENIX usr       3c  PartitionMagic  84  OS /2 hidden C:  c6  DRDOS /sec (FAT-
 4  FAT16 <32M      40  Venix 80286     85  Linux extended  c7  Syrinx
 5  Extended        41  PPC PReP Boot   86  NTFS volume  set da  Non-FS data
 6  FAT16           42  SFS             87  NTFS volume  set db  CP /M / CTOS / .
 7  HPFS /NTFS/exFAT 4d  QNX4.x          88  Linux plaintext de  Dell Utility
 8  AIX             4e  QNX4.x 2nd part 8e  Linux LVM        df BootIt
 9  AIX bootable    4f  QNX4.x 3rd part 93  Amoeba          e1  DOS access
 a  OS /2 Boot Manag 50  OnTrack DM      94  Amoeba BBT      e3  DOS R /O
 b  W95 FAT32       51  OnTrack DM6 Aux 9f  BSD /OS e4  SpeedStor
 c  W95 FAT32 (LBA) 52  CP /M a0  IBM Thinkpad hi eb  BeOS fs
 e  W95 FAT16 (LBA) 53  OnTrack DM6 Aux a5  FreeBSD         ee  GPT
 f  W95 Ext'd (LBA) 54  OnTrackDM6      a6  OpenBSD         ef  EFI (FAT-12 /16/
10  OPUS            55  EZ-Drive        a7  NeXTSTEP        f0  Linux /PA-RISC b
11  Hidden FAT12    56  Golden Bow      a8  Darwin UFS      f1  SpeedStor
12  Compaq diagnost 5c  Priam Edisk     a9  NetBSD          f4  SpeedStor
14  Hidden FAT16 <3 61  SpeedStor       ab  Darwin boot     f2  DOS secondary
16  Hidden FAT16    63  GNU HURD or Sys af  HFS / HFS+      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
1e  Hidden W95 FAT1 80  Old Minix
 
Command (m  for help): t　　　　 // 修改类型
Selected partition 1
Hex code ( type L to list all codes): 8e　　　　 // 改为LVM类型
Changed  type of partition  'Linux' to  'Linux LVM'
 
Command (m  for help): p　　　　 // 显示信息
 
Disk  /dev/sdb : 10.7 GB, 10737418240 bytes, 20971520 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical /physical ): 512 bytes / 512 bytes
I /O size (minimum /optimal ): 512 bytes / 512 bytes
Disk label  type : dos
Disk identifier: 0x81cc782c
 
   Device Boot      Start         End      Blocks   Id  System
/dev/sdb1 2048    20971519    10484736   8e  Linux LVM　　　　 // 类型修改成功
 
Command (m  for help): w　　　　 // 保存退出
The partition table has been altered!
 
Calling ioctl() to re- read partition table.
Syncing disks.

$ fdisk /dev/sdb
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 .
 
Device does not contain a recognized partition table
Building a new DOS disklabel with disk identifier 0x81cc782c.
 
Command (m  for help): n　　　　 // 新建
Partition  type :
   p   primary (0 primary, 0 extended, 4  free )
   e   extended
Select (default p): p　　　　 //p 为主分区，e为扩展分区
Partition number (1-4, default 1): 1　　　　 // 分区号，回车(默认)
First sector (2048-20971519, default 2048):　　　　 // 回车(默认)
Using default value 2048
Last sector, +sectors or +size{K,M,G} (2048-20971519, default 20971519):　　　　 // 回车(默认)
Using default value 20971519
Partition 1 of  type Linux and of size 10 GiB is  set
 
Command (m  for help): p　　　　 // 显示信息
 
Disk  /dev/sdb : 10.7 GB, 10737418240 bytes, 20971520 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical /physical ): 512 bytes / 512 bytes
I /O size (minimum /optimal ): 512 bytes / 512 bytes
Disk label  type : dos
Disk identifier: 0x81cc782c
 
   Device Boot      Start         End      Blocks   Id  System
/dev/sdb1 2048    20971519    10484736   83  Linux
 
Command (m  for help): l　　　　 // 列出所有类型
 
 0  Empty           24  NEC DOS         81  Minix / old Lin bf  Solaris
 1  FAT12           27  Hidden NTFS Win 82  Linux swap / So c1  DRDOS /sec (FAT-
 2  XENIX root      39  Plan 9          83  Linux           c4  DRDOS /sec (FAT-
 3  XENIX usr       3c  PartitionMagic  84  OS /2 hidden C:  c6  DRDOS /sec (FAT-
 4  FAT16 <32M      40  Venix 80286     85  Linux extended  c7  Syrinx
 5  Extended        41  PPC PReP Boot   86  NTFS volume  set da  Non-FS data
 6  FAT16           42  SFS             87  NTFS volume  set db  CP /M / CTOS / .
 7  HPFS /NTFS/exFAT 4d  QNX4.x          88  Linux plaintext de  Dell Utility
 8  AIX             4e  QNX4.x 2nd part 8e  Linux LVM        df BootIt
 9  AIX bootable    4f  QNX4.x 3rd part 93  Amoeba          e1  DOS access
 a  OS /2 Boot Manag 50  OnTrack DM      94  Amoeba BBT      e3  DOS R /O
 b  W95 FAT32       51  OnTrack DM6 Aux 9f  BSD /OS e4  SpeedStor
 c  W95 FAT32 (LBA) 52  CP /M a0  IBM Thinkpad hi eb  BeOS fs
 e  W95 FAT16 (LBA) 53  OnTrack DM6 Aux a5  FreeBSD         ee  GPT
 f  W95 Ext'd (LBA) 54  OnTrackDM6      a6  OpenBSD         ef  EFI (FAT-12 /16/
10  OPUS            55  EZ-Drive        a7  NeXTSTEP        f0  Linux /PA-RISC b
11  Hidden FAT12    56  Golden Bow      a8  Darwin UFS      f1  SpeedStor
12  Compaq diagnost 5c  Priam Edisk     a9  NetBSD          f4  SpeedStor
14  Hidden FAT16 <3 61  SpeedStor       ab  Darwin boot     f2  DOS secondary
16  Hidden FAT16    63  GNU HURD or Sys af  HFS / HFS+      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
1e  Hidden W95 FAT1 80  Old Minix
 
Command (m  for help): t　　　　 // 修改类型
Selected partition 1
Hex code ( type L to list all codes): 8e　　　　 // 改为LVM类型
Changed  type of partition  'Linux' to  'Linux LVM'
 
Command (m  for help): p　　　　 // 显示信息
 
Disk  /dev/sdb : 10.7 GB, 10737418240 bytes, 20971520 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical /physical ): 512 bytes / 512 bytes
I /O size (minimum /optimal ): 512 bytes / 512 bytes
Disk label  type : dos
Disk identifier: 0x81cc782c
 
   Device Boot      Start         End      Blocks   Id  System
/dev/sdb1 2048    20971519    10484736   8e  Linux LVM　　　　 // 类型修改成功
 
Command (m  for help): w　　　　 // 保存退出
The partition table has been altered!
 
Calling ioctl() to re- read partition table.
Syncing disks.