1. 虚拟机可以添加sisc硬盘，添加了要重启虚拟机才能生效

重启后用fdisk -l可以查看到新添的盘，/dev/sdb是新加的第二块硬盘[[email protected] ~]# fdisk -l

Disk /dev/sdb: 1073 MB, 1073741824 bytes

255 heads, 63 sectors/track, 130 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 /dev/sda: 8589 MB, 8589934592 bytes

255 heads, 63 sectors/track, 1044 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: 0x00096eec

Device Boot      Start         End      Blocks   Id  System

/dev/sda1   *           1          26      204800   83  Linux

Partition 1 does not end on cylinder boundary.

/dev/sda2              26          91      524288   82  Linux swap / Solaris

Partition 2 does not end on cylinder boundary.

/dev/sda3              91        1045     7658496   83  Linux

2. 磁盘分区

命令fdisk /dev/sdb

[[email protected]~]# fdisk /dev/sdb

Device containsneither a valid DOS partition table, nor Sun, SGI or OSF disklabel

Building a newDOS disklabel with disk identifier 0x29a761e1.

Changes willremain in memory only, until you decide to write them.

After that, ofcourse, the previous content won‘t be recoverable.

Warning: invalidflag 0x0000 of partition table 4 will be corrected by w(rite)

WARNING:DOS-compatible mode is deprecated. It‘s strongly recommended to

switch off the mode (command ‘c‘) andchange display units to

sectors (command ‘u‘).

Command (m forhelp):

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 forhelp): p

Disk /dev/sdb:106 MB, 106954752 bytes

64 heads, 32sectors/track, 102 cylinders

Units = cylindersof 2048 * 512 = 1048576 bytes

Sector size(logical/physical): 512 bytes / 512 bytes

I/O size(minimum/optimal): 512 bytes / 512 bytes

Disk identifier:0x29a761e1

Device Boot      Start         End      Blocks  Id  System

Command (m forhelp): n

Command action

e  extended

p  primary partition (1-4)

p

Partition number(1-4): 1

First cylinder(1-102, default 1):

Using defaultvalue 1

Last cylinder,+cylinders or +size{K,M,G} (1-102, default 102): +10m

Unsupportedsuffix: ‘m‘.

Supported: 10^N:KB (KiloByte), MB (MegaByte), GB (GigaByte)

2^N: K  (KibiByte), M (MebiByte), G  (GibiByte)

Last cylinder,+cylinders or +size{K,M,G} (1-102, default 102): +10M

Command (m forhelp): p

Disk /dev/sdb:106 MB, 106954752 bytes

64 heads, 32sectors/track, 102 cylinders

Units =cylinders of 2048 * 512 = 1048576 bytes

Sector size(logical/physical): 512 bytes / 512 bytes

I/O size(minimum/optimal): 512 bytes / 512 bytes

Disk identifier:0x29a761e1

Device Boot      Start         End     Blocks   Id System

/dev/sdb1               1          11       11248  83Linux

l查看分区类型

Command (m forhelp): l

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  XENIXroot      3c  PartitionMagic  83  Linux           c4 DRDOS/sec (FAT-

3  XENIXusr       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-FSdata

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  AIXbootable    50  OnTrack DM      93 Amoeba          e1  DOS access

#如果要修改分区类型，用t

Command (m forhelp): t

Partition number(1-8): 8

Hex code (type Lto list codes): 8e

Changed systemtype of partition 8 to 8e (Linux LVM)

#然后就可以看到Id变成了8e，即现在是lVM类型的分区了

Device Boot      Start         End      Blocks   Id  System

/dev/sdb1               1         130     1044193+  8e  Linux LVM

3. 格式化分区[[email protected]~]# mkfs.ext4 -b 4096 -i 1024 /dev/sdb1

#格式化指定文件系统，inode和block，实际是默认的，不用指定

[[email protected]~]#mkfs.ext4 -T largerfile /dev/sdb1

-t: 文件系统

-T 快速格式化

4. 挂载[[email protected]~]# mount /dev/sdb1 /mnt

问题排错：如果出现如下错误：

[[email protected]~]# mount /dev/sdb1 /mnt  #未格式化，无法挂载

mount: you mustspecify the filesystem type

5. 查看挂载结果

df -hT

原文：http://4951326.blog.51cto.com/4941326/1923594