Linux使用fdisk删除分区详解

在磁盘/dev/sdb 上有一个分区sdb1，现需要删除sdb1分区

[root@localhost ~]# lsblk
NAME                        MAJ:MIN RM   SIZE RO TYPE MOUNTPOINT
sr0                          11:0    1 420.8M  0 rom
sda                           8:0    0    10G  0 disk
├─sda1                        8:1    0   500M  0 part /boot
└─sda2                        8:2    0   9.5G  0 part
  ├─VolGroup-lv_swap (dm-0) 253:0    0   996M  0 lvm  [SWAP]
  └─VolGroup-lv_root (dm-1) 253:1    0   8.5G  0 lvm  /
sdb                           8:16   0     1G  0 disk
└─sdb1                        8:17   0 509.9M  0 part
sdc                           8:32   0     1G  0 disk
sdd                           8:48   0     1G  0 disk
sde                           8:64   0     1G  0 disk
[root@localhost ~]#

使用fdisk /dev/sdb 进行操作

[root@localhost ~]# fdisk /dev/sdb

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): 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): d   #输入d 来进行删除
Selected partition 1

Command (m for help):
Command (m for help):
Command (m for help): w    #最好按w进行保存刚才的操作
The partition table has been altered!

Calling ioctl() to re-read partition table.
Syncing disks.
[root@localhost ~]#

现在使用lsblk查看，发现sdb1分区已经删除

[root@localhost ~]# lsblk
NAME                        MAJ:MIN RM   SIZE RO TYPE MOUNTPOINT
sr0                          11:0    1 420.8M  0 rom
sda                           8:0    0    10G  0 disk
├─sda1                        8:1    0   500M  0 part /boot
└─sda2                        8:2    0   9.5G  0 part
  ├─VolGroup-lv_swap (dm-0) 253:0    0   996M  0 lvm  [SWAP]
  └─VolGroup-lv_root (dm-1) 253:1    0   8.5G  0 lvm  /
sdb                           8:16   0     1G  0 disk
sdc                           8:32   0     1G  0 disk
sdd                           8:48   0     1G  0 disk
sde                           8:64   0     1G  0 disk
[root@localhost ~]#