linux系统中如何挂载第二块硬盘

一、检测硬盘能否被识别
# fdisk -l
Disk /dev/sda: 36.7 GB, 36703934464 bytes
255 heads, 63 sectors/track, 4462 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
   Device Boot      Start         End      Blocks   Id  System
/dev/sda1   *           1         261     2096451   83  Linux
/dev/sda2             262         783     4192965   83  Linux
/dev/sda3             784        1305     4192965   83  Linux
/dev/sda4            1306        4462    25358602+   5  Extended
/dev/sda5            1306        1827     4192933+  83  Linux
/dev/sda6            1828        2088     2096451   82  Linux swap
/dev/sda7            2089        4462    19069123+  83  Linux
Disk /dev/sdb: 36.7 GB, 36748945408 bytes
255 heads, 63 sectors/track, 4467 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
   Device Boot      Start         End      Blocks   Id  System
/dev/sdb1   *           1         509     4088511   83  Linux
/dev/sdb2             510        2430    15430432+  83  Linux
/dev/sdb3            2431        2557     1020127+  82  Linux swap
/dev/sdb4            2558        4467    15342075    f  W95 Ext'd (LBA)
/dev/sdb5            2558        2811     2040223+  83  Linux
/dev/sdb6            2812        3830     8185086   83  Linux
/dev/sdb7            3831        4467     5116671   83  Linux
/dev/sdb说明已经识别出第二块硬盘

二、挂载硬盘
1、在本地硬盘中临时创建一个目录
#mkdir /opt/data/tmp1                 
2、挂载第二块硬盘中的一个分区/dev/sdb1到tmp1
#mount /dev/sdb1   /opt/data/tmp1
3、查看是否被挂载
# df -h
Filesystem            Size  Used Avail Use% Mounted on
/dev/sda1             2.0G  141M  1.8G   8% /
none                 1014M     0 1014M   0% /dev/shm
/dev/sda2             4.0G  1.8G  2.0G  47% /opt
/dev/sda7              18G  168M   17G   1% /opt/data
/dev/sda5             4.0G  1.4G  2.4G  37% /usr
/dev/sda3             4.0G  2.1G  1.8G  55% /var
/dev/sdb1             3.9G  1.4G  2.3G  38% /opt/tmp/tmp1

三、卸载硬盘
#umount /dev/sdb1