CentOS 6
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Add Hard Drive
2011/07/11
  This is an example to create a partition when you add a new hard drive.
[root@dlp ~]#
fdisk /dev/sdb
# enter operation mode for partitions
WARNING: DOS-compatible mode is deprecated. It's strongly recommended to
  switch off the mode (command 'c') and change display units to

  sectors (command 'u').
Command (m for help):
p
# show partition table
Disk /dev/sdb: 320.1 GB, 320071851520 bytes
255 heads, 63 sectors/track, 38913 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk identifier: 0x000c881d
  Device Boot
Start
End
Blocks
Id
System

 
# none

Command (m for help):
n
# create a partition

Command action
  e    extended
  p    primary partition (1-4)
p
# primary

Partition number (1-4):
1
# specify partition number

First cylinder (1-1-38913, default 1):
# starting cylinder

Using default value 1
Last cylinder, +cylinders or +size{K,M,G} (1-38913, default 38913): 
# end cylinder

Using default value 38913
Command (m for help):
p
# show partition table
Disk /dev/sdb: 320.1 GB, 320071851520 bytes
255 heads, 63 sectors/track, 38913 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk identifier: 0x000c881d
  Device Boot
Start
End
Blocks
Id
System

  /dev/sdb1
1
38913
312568641
83
Linux  
# created
Command (m for help):
t
# change type

Selected partition 1
Hex code (type L to list codes):
L
# show list

0 Empty 24 NEC DOS 81 Minix / old Lin bf Solaris 1 FAT12 39 Plan 9 82 Linux swap / So c1 DRDOS/sec (FAT- 2 XENIX root 3c PartitionMagic 83 Linux c4 DRDOS/sec (FAT- 3 XENIX usr 40 Venix 80286 84 OS/2 hidden C: c6 DRDOS/sec (FAT- 4 FAT16 <32M 41 PPC PReP Boot 85 Linux extended c7 Syrinx 5 Extended 42 SFS 86 NTFS volume set da Non-FS data 6 FAT16 4d QNX4.x 87 NTFS volume set db CP/M / CTOS / . 7 HPFS/NTFS 4e QNX4.x 2nd part 88 Linux plaintext de Dell Utility 8 AIX 4f QNX4.x 3rd part 8e Linux LVM df BootIt 9 AIX bootable 50 OnTrack DM 93 Amoeba e1 DOS access a OS/2 Boot Manag 51 OnTrack DM6 Aux 94 Amoeba BBT e3 DOS R/O b W95 FAT32 52 CP/M 9f BSD/OS e4 SpeedStor c W95 FAT32 (LBA) 53 OnTrack DM6 Aux a0 IBM Thinkpad hi eb BeOS fs e W95 FAT16 (LBA) 54 OnTrackDM6 a5 FreeBSD ee GPT f W95 Ext'd (LBA) 55 EZ-Drive a6 OpenBSD ef EFI (FAT-12/16/ 10 OPUS 56 Golden Bow a7 NeXTSTEP f0 Linux/PA-RISC b 11 Hidden FAT12 5c Priam Edisk a8 Darwin UFS f1 SpeedStor 12 Compaq diagnost 61 SpeedStor a9 NetBSD f4 SpeedStor 14 Hidden FAT16 <3 63 GNU HURD or Sys ab Darwin boot f2 DOS secondary 16 Hidden FAT16 64 Novell Netware af HFS / HFS+ fb VMware VMFS 17 Hidden HPFS/NTF 65 Novell Netware b7 BSDI fs fc VMware VMKCORE 18 AST SmartSleep 70 DiskSecure Mult b8 BSDI swap fd Linux raid auto 1b Hidden W95 FAT3 75 PC/IX bb Boot Wizard hid fe LANstep 1c Hidden W95 FAT3 80 Old Minix be Solaris boot ff BBT 1e Hidden W95 FAT1
Hex code (type L to list codes):
8e
 
# specify Linux LVM

Changed system type of partition 1 to 8e (Linux LVM)
Command (m for help):
p
# show partition table
Disk /dev/sdb: 320.1 GB, 320071851520 bytes
255 heads, 63 sectors/track, 38913 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk identifier: 0x000c881d
  Device Boot
Start
End
Blocks
Id
System

  /dev/sdb1
1
38913
312568641
8e
Linux LVM  
# changed
Command (m for help):
w
# save and quit

The partition table has been altered!
Calling ioctl() to re-read partition table.
Syncing disks.
[root@dlp ~]#
sfdisk -l /dev/sdb
# show status
Disk /dev/sdb: 38913 cylinders, 255 heads, 63 sectors/track
Units = cylinders of 8225280 bytes, blocks of 1024 bytes, counting from 0
Device
  Boot
Start
End
#cyls
#blocks
Id
System

/dev/sdb1
0+
20022
38913-
312568641
8e
Linux LVM  
# created

/dev/sdb2
0
-
0
0
0
Empty

/dev/sdb3
0
-
0
0
0
Empty

/dev/sdb4
0
-
0
0
0
Empty

 
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