使用fdisk工具对硬盘进行操作

现有一块新硬盘vdb

root@2018sh001-1213728:~# lsblk
NAME   MAJ:MIN RM  SIZE RO TYPE MOUNTPOINT
vda    254:0    0   40G  0 disk 
├─vda1 254:1    0  3.7G  0 part [SWAP]
└─vda2 254:2    0 36.3G  0 part /
vdb    254:16   0  100G  0 disk 

进入硬盘，进行分区

root@2018sh001-1213728:~# fdisk /dev/vdb
 
Welcome to fdisk (util-linux 2.29.2).
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.
Created a new DOS disklabel with disk identifier 0x7d58c695.
 
Command (m for help): p
Disk /dev/vdb: 100 GiB, 107374182400 bytes, 209715200 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
Disklabel type: dos
Disk identifier: 0x7d58c695
#可该改硬盘，没有分区
Command (m for help): n  # n 新建分区
Partition type
   p   primary (0 primary, 0 extended, 4 free)
   e   extended (container for logical partitions)
Select (default p): p  #一路默认回车即可
Partition number (1-4, default 1): 1
First sector (2048-209715199, default 2048): 
Last sector, +sectors or +size{K,M,G,T,P} (2048-209715199, default 209715199): 
Created a new partition 1 of type 'Linux' and of size 100 GiB. # 创建分区成功
w #保存退出

格式化分区，使用ext3格式

root@2018sh001-1213728:~# mkfs.ext3 /vdb/vdb1
mke2fs 1.43.4 (31-Jan-2017)
The file /vdb/vdb1 does not exist and no size was specified.
root@2018sh001-1213728:~# mkfs.ext3 /dev/vdb1
mke2fs 1.43.4 (31-Jan-2017)
Creating filesystem with 26214144 4k blocks and 6553600 inodes
Filesystem UUID: 4e1ad9dd-1826-43d9-a7ba-a50b091a300a
Superblock backups stored on blocks: 
    32768, 98304, 163840, 229376, 294912, 819200, 884736, 1605632, 2654208, 
    4096000, 7962624, 11239424, 20480000, 23887872
 
Allocating group tables: done                            
Writing inode tables: done                            
Creating journal (131072 blocks): done
Writing superblocks and filesystem accounting information: done   

将新硬盘挂载到/d2目录

root@2018sh001-1213728:~# mount /dev/vdb1 /d2
root@2018sh001-1213728:~# df -h
Filesystem      Size  Used Avail Use% Mounted on
udev            991M     0  991M   0% /dev
tmpfs           201M   25M  177M  13% /run
/dev/vdb1        36G   12G   23G  34% /
tmpfs          1002M     0 1002M   0% /dev/shm
tmpfs           5.0M  8.0K  5.0M   1% /run/lock
tmpfs          1002M     0 1002M   0% /sys/fs/cgroup
tmpfs           201M     0  201M   0% /run/user/0
/dev/vdb1        98G   61M   93G   1% /d2 
#可见多了一个分区，挂载成功

卸载并删除分区（未经测试）

umount /dev/sdc2
 
fdisk /dev/sdc
m
d
1
d
w