linux挂载第二块硬盘
时间：2007-02-06 来源：yanaiming
昨天毒霸病毒上报和网站日志分析的那台服务器硬盘出现了坏道，导致系统无法启动。需要把硬盘中的数据导出来，于是临时找了台机器把硬盘插上去检测下是否能识别。呵呵，顺便熟悉了fdisk、mount命令。
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 注意：1、以上操作必须为root用户 2、硬盘插上去后需要重起服务器
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 注意：1、以上操作必须为root用户 2、硬盘插上去后需要重起服务器
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