Linux 硬盘分区格式化

[root@NAT ~]# fdisk -l

Disk /dev/sda: 200.0 GB, 200049647616 bytes
255 heads, 63 sectors/track, 24321 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes

   Device Boot      Start         End      Blocks   Id  System
/dev/sda1   *           1          25      200781   83  Linux
/dev/sda2              26        2575    20482875   83  Linux
/dev/sda3            2576        5125    20482875   83  Linux
/dev/sda4            5126       24321   154191870    5  Extended
/dev/sda5            5126        6400    10241406   83  Linux
/dev/sda6            6401        6655     2048256   82  Linux swap / Solaris
/dev/sda7            6656       24321   141902113+  83  Linux

Disk /dev/sdb: 1500.3 GB, 1500301910016 bytes        //未分区的硬盘，sdb 1500GB
255 heads, 63 sectors/track, 182401 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes

Disk /dev/sdb doesn't contain a valid partition table
 
[root@NAT ~]# fdisk /dev/sdb
Device contains neither a valid DOS partition table, nor Sun, SGI or OSF disklabel
Building a new DOS disklabel. Changes will remain in memory only,
until you decide to write them. After that, of course, the previous
content won't be recoverable.

The number of cylinders for this disk is set to 182401.
There is nothing wrong with that, but this is larger than 1024,
and could in certain setups cause problems with:
1) software that runs at boot time (e.g., old versions of LILO)
2) booting and partitioning software from other OSs
   (e.g., DOS FDISK, OS/2 FDISK)
Warning: invalid flag 0x0000 of partition table 4 will be corrected by w(rite)

Command (m for help): m
Command action
   a   toggle a bootable flag
   b   edit bsd disklabel
   c   toggle the dos compatibility flag
   d   delete a partition
   l   list known partition types
   m   print this menu
   n   add a new partition
   o   create a new empty DOS partition table
   p   print the partition table
   q   quit without saving changes
   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
   x   extra functionality (experts only)

Command (m for help): n
Command action
   e   extended
   p   primary partition (1-4)
p
Partition number (1-4): 1
First cylinder (1-182401, default 1):
Using default value 1
Last cylinder or +size or +sizeM or +sizeK (1-182401, default 182401): 80000

Command (m for help): n
Command action
   e   extended
   p   primary partition (1-4)
p
Partition number (1-4): 2
First cylinder (80001-182401, default 80001):
Using default value 80001
Last cylinder or +size or +sizeM or +sizeK (80001-182401, default 182401):
Using default value 182401

Command (m for help): m
Command action
   a   toggle a bootable flag
   b   edit bsd disklabel
   c   toggle the dos compatibility flag
   d   delete a partition
   l   list known partition types
   m   print this menu
   n   add a new partition
   o   create a new empty DOS partition table
   p   print the partition table
   q   quit without saving changes
   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
   x   extra functionality (experts only)

Command (m for help): l

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

Command (m for help): w
The partition table has been altered!

Calling ioctl() to re-read partition table.
Syncing disks.
[root@NAT ~]# df -h
文件系统              容量  已用 可用 已用% 挂载点
/dev/sda2              19G  2.6G   16G  14% /
/dev/sda1             190M   10M  171M   6% /boot
tmpfs                 248M     0  248M   0% /dev/shm
/dev/sda7             132G   16G  110G  13% /home
/dev/sda5             9.5G  3.2G  5.9G  36% /usr
/dev/sda3              19G  4.1G   14G  23% /var
[root@NAT ~]# fdisk -l

Disk /dev/sda: 200.0 GB, 200049647616 bytes
255 heads, 63 sectors/track, 24321 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes

   Device Boot      Start         End      Blocks   Id  System
/dev/sda1   *           1          25      200781   83  Linux
/dev/sda2              26        2575    20482875   83  Linux
/dev/sda3            2576        5125    20482875   83  Linux
/dev/sda4            5126       24321   154191870    5  Extended
/dev/sda5            5126        6400    10241406   83  Linux
/dev/sda6            6401        6655     2048256   82  Linux swap / Solaris
/dev/sda7            6656       24321   141902113+  83  Linux

Disk /dev/sdb: 1500.3 GB, 1500301910016 bytes
255 heads, 63 sectors/track, 182401 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes

   Device Boot      Start         End      Blocks   Id  System
/dev/sdb1               1       80000   642599968+  83  Linux
/dev/sdb2           80001      182401   822536032+  83  Linux
[root@NAT
[root@NAT ~]# mkfs -t ext3 -c /dev/sdb1
mke2fs 1.39 (29-May-2006)
Filesystem label=
OS type: Linux
Block size=4096 (log=2)
Fragment size=4096 (log=2)
80330752 inodes, 160649992 blocks
8032499 blocks (5.00%) reserved for the super user
First data block=0
Maximum filesystem blocks=0
4903 block groups
32768 blocks per group, 32768 fragments per group
16384 inodes per group
Superblock backups stored on blocks:
        32768, 98304, 163840, 229376, 294912, 819200, 884736, 1605632, 2654208,
        4096000, 7962624, 11239424, 20480000, 23887872, 71663616, 78675968,
        102400000