LINUX挂载硬盘（不分区）的方法

2020年06月21日发布阅读(4701) 作者：Jerman

查看所有硬盘信息

下面可以看到有一个/dev/vdb硬盘没有挂载

[root@123456 ~]# fdisk -l
Disk /dev/vda: 42.9 GB, 42949672960 bytes, 83886080 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
Disk label type: dos
Disk identifier: 0x0008d73a
   Device Boot      Start         End      Blocks   Id  System
/dev/vda1   *        2048    83884031    41940992   83  Linux
Disk /dev/vdb: 21.5 GB, 21474836480 bytes, 41943040 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

格式化硬盘

硬盘比较小，直接格式化，不分区

[root@123456 ~]# mkfs.ext4 /dev/vdb
mke2fs 1.42.9 (28-Dec-2013)
Filesystem label=
OS type: Linux
Block size=4096 (log=2)
Fragment size=4096 (log=2)
Stride=0 blocks, Stripe width=0 blocks
1310720 inodes, 5242880 blocks
262144 blocks (5.00%) reserved for the super user
First data block=0
Maximum filesystem blocks=2153775104
160 block groups
32768 blocks per group, 32768 fragments per group
8192 inodes per group
Superblock backups stored on blocks: 
    32768, 98304, 163840, 229376, 294912, 819200, 884736, 1605632, 2654208, 
    4096000
Allocating group tables: done                            
Writing inode tables: done                            
Creating journal (32768 blocks): done
Writing superblocks and filesystem accounting information: done

挂载硬盘到指定目录

这里把硬盘挂载到根目录下的/data

[root@123456 ~]# mount /dev/vdb /data
mount: mount point /data does not exist
[root@123456 ~]# mkdir /data
[root@123456 ~]# mount /dev/vdb /data

修改启动文件

保证系统启动时，自动挂载硬盘

vim /etc/fstab

/etc/fstab文件末尾添加上：

/dev/vdb   /data ext4    defaults    0  0

重启系统

init 6

重启后检查挂载

[root@123456 ~]# df -h
Filesystem      Size  Used Avail Use% Mounted on
devtmpfs        909M     0  909M   0% /dev
tmpfs           919M     0  919M   0% /dev/shm
tmpfs           919M  444K  919M   1% /run
tmpfs           919M     0  919M   0% /sys/fs/cgroup
/dev/vda1        40G   12G   27G  30% /
/dev/vdb         20G   45M   19G   1% /data
tmpfs           184M     0  184M   0% /run/user/0

重新挂载到新目录

# 解除旧的挂载
umount /data
# 挂载到新目录
mount /dev/vdb /data-new
# 修改启动文件
vim /etc/fstab
/dev/vdb   /data-new ext4    defaults    0  0
`