所以第三个就是sdc!你可以看下fdisk -l 根据大小判断下是 那一块硬盘!
命名方式 和你的设备有关,iscsi 好像就是sd*
光驱是sr(好像是)
1.插入新硬盘,启动Linux服务器,使用fdisk -l 查看硬盘
#fdisk -l
Disk /dev/sdb: 1000.2 GB, 1000204886016 bytes
2.格式化硬盘
#mkfs -t ext4 /dev/sdb
3.挂载硬盘
#mount 硬盘地址 要挂载的地址
#mount /dev/sdb /media/imgs
4.实现系统重启后自动挂载该分区
#vi /etc/fstab
在最后一行添加
/dev/sdb /media/imgs ext4 defaults 1 2
一、添加磁盘
添加加新硬盘重启服务器
添加完之后就可以重启机器了,如果你机器是开启的,进入系统并不能看见你刚添加的那块磁盘,只有等系统重启,重新加载之后才会显示安装的那块磁盘
二、进入系统
使用root用户进入系统
三、 查看硬盘信息
[root@localhost ~]# fdisk -l //磁盘命令
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Disk /dev/sda: 21.5 GB, 21474836480 bytes
255 heads, 63 sectors/track, 2610 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk identifier: 0x000c4cb5
Device Boot Start End Blocks Id System
/dev/sda1 * 1 64 512000 83 Linux
Partition 1 does not end on cylinder boundary.
/dev/sda2 64 2611 20458496 8e Linux LVM
Disk /dev/sdb: 21.5 GB, 21474836480 bytes
255 heads, 63 sectors/track, 2610 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk identifier: 0xd0f5c869
Device Boot Start End Blocks Id System
/dev/sdb1 1 2610 20964793+ 83 Linux
Disk /dev/sdc: 21.5 GB, 21474836480 bytes
255 heads, 63 sectors/track, 2610 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk identifier: 0x00000000
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可以看到这台机器加载了三个磁盘sda、sdb、sdc
其中sda是初始磁盘,sdb已经初始化且经过使用,sdc是刚刚加载的,未格式化的新磁盘
四、创建新硬盘分区
[root@localhost ~]# fdisk /dev/sdc #进入磁盘
Device contains neither a valid DOS partition table, nor Sun, SGI or OSF disklabel
Building a new DOS disklabel with disk identifier 0x45a3cadb.
Changes will remain in memory only, until you decide to write them.
After that, of course, the previous content won't be recoverable.
Warning: invalid flag 0x0000 of partition table 4 will be corrected by w(rite)
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 #设定可启动标记
b edit bsd disklabel
c toggle the dos compatibility flag
d delete a partition #删除一个分区
l list known partition types #各分区类型所对应的ID
m print this menu #菜单
n add a new partition #添加一个分区
o create a new empty DOS partition table
p print the partition table #显示该磁盘下的当前分区信息
q quit without saving changes #不保存退出
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 #保存退出
x extra functionality (experts only)
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知道命令之后就可以进行分区了
Command (m for help): p //打印分区信息,可以看到当前并没有分区
Disk /dev/sdc: 21.5 GB, 21474836480 bytes
255 heads, 63 sectors/track, 2610 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk identifier: 0x45a3cadb
Device Boot Start End Blocks Id System
Command (m for help): n //创建一个新的分区
Command action
e extended//输入e为创建扩展分区
p primary partition (1-4) //输入p为创建逻辑分区
p
Partition number (1-4): 1//划分逻辑分区
First cylinder (1-2610, default 1): //我这里直接回车,是不想把该磁盘分成多个分区,把整个磁盘作为1个分区
Using default value 1
Last cylinder, +cylinders or +size{K,M,G} (1-2610, default 2610):
Using default value 2610
Command (m for help): p //再次查看可以看到该磁盘已经有1个分区了
Disk /dev/sdc: 21.5 GB, 21474836480 bytes
255 heads, 63 sectors/track, 2610 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk identifier: 0x45a3cadb
Device Boot Start End Blocks Id System
/dev/sdc1 1 2610 20964793+ 83 Linux
Command (m for help): w //保存分区
The partition table has been altered!
Calling ioctl() to re-read partition table.
Syncing disks.
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再次使用”fdisk -l”命令查看磁盘信息
Disk /dev/sdc: 21.5 GB, 21474836480 bytes
255 heads, 63 sectors/track, 2610 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk identifier: 0x406a4c58
Device Boot Start End Blocks Id System
/dev/sdc1 1 2610 20964793+ 83 Linux
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第三块磁盘/dev/sdc已经分区好了
五、格式化分区
[root@localhost ~]# mkfs.ext3 /dev/sdc1
//将/dev/sdc1格式化为ext3类型,好像大部分的磁盘都是格式化为ext3类型,具体为什么没有深入研究,暂时不清楚,想了解的朋友可以自己查一下
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[root@localhost ~]# mkfs.ext3 /dev/sdc1
mke2fs 1.41.12 (17-May-2010)
文件系统标签=
*** 作系统:Linux
块大小=4096 (log=2)
分块大小=4096 (log=2)
Stride=0 blocks, Stripe width=0 blocks
1310720 inodes, 5241198 blocks
262059 blocks (5.00%) reserved for the super user
第一个数据块=0
Maximum filesystem blocks=4294967296
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
正在写入inode表: 完成
Creating journal (32768 blocks): 完成
Writing superblocks and filesystem accounting information: 完成
This filesystem will be automatically checked every 31 mounts or
180 days, whichever comes first. Use tune2fs -c or -i to override.
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格式化完毕,此时就可以使用“mount”命令挂载分区了,然后使用这个磁盘空间了
六、挂载分区以及开机自动挂载
[root@localhost ~]# df -h //此时只有sda1和sdb1两个磁盘挂载
Filesystem Size Used Avail Use% Mounted on
/dev/mapper/VolGroup-lv_root 18G 15G 1.5G 92% /
tmpfs 932M 76K 932M 1% /dev/shm
/dev/sda1 485M 40M 421M 9% /boot
/dev/sdb1 20G 1.2G 18G 7% /disk/diskone
/dev/sr0 4.2G 4.2G 0 100% /media/CentOS_6.5_Final
[root@localhost /]# cd /disk/
[root@localhost disk]# ll
总用量 4
drwxr-xr-x. 4 root root 4096 7月 28 17:04 diskone
[root@localhost disk]# cd diskone/
[root@localhost diskone]# ll
总用量 20
drwx------. 2 root root 16384 7月 28 16:12 lost+found
drwxr-xr-x. 2 root root 4096 7月 28 17:09 software
[root@localhost diskone]# cd ../
[root@localhost disk]# mkdir disktwo //创建被挂载的路径
[root@localhost disk]# ll
总用量 8
drwxr-xr-x. 4 root root 4096 7月 28 17:04 diskone
drwxr-xr-x. 2 r
一、整体流程1、把新硬盘连接起来
2、在CMOS里配置新硬盘
3、查看硬盘代号
4、用 fdisk 对硬盘进行分区
5、格式化分区
6、创建挂载点
7、设置/dev/fstab 以便开机时自动挂载分区
8、设置新硬盘分区的读写权限
二、具体 *** 作步骤
1、把新硬盘连接起来,属于硬件 *** 作,注意主板和硬盘的接口插正确就可以了。
2、在CMOS里配置新硬盘
启动计算机,并进入CMOS,让机器找到新硬盘。
IDE Channel 0Master: none (没有盘)
IDE Channel 0Slave:none (没有盘)
IDE Channel 1Master:是DVD-ROM
IDE Channel 1Slave:none (没有盘)
IDE Channel 2Master: HDS728080PLA380 (原来的80GBSATA I 硬盘)
IDE Channel 3Master: none (没有盘)
在none 的Channels一个一个地让计算机自动寻找硬盘。最后发现了:
IDE Channel 3Master: ST31000528AS (新的1000GB SATA II型硬盘)
3、 查看硬盘代号
$ df
发现:
写道
/dev/sda1 /C_disk 15GB 7 (reserved for Windows XP, my PC is adual- system)
/dev/sda2 / 15GB 83 (Linux)
/dev/sda3 LinuxLVM 8e (Linux)
/dev/sda4 extended
/dev/sda5 82 (Linux Swap, 512MB, twice of the momoey)
/dev/sda6 /data 83 (Linux, mounted on /data, 45.5GB)
注意: SATA (通常称串口盘) 在Linux下被视为SCSI 盘(一种早期用在Sun工作站上和服务器 的高速硬盘,那时很贵!)。
可以判定: 新的硬盘应该就是/dev/sdb 了。
进入超级用户:
写道
$ su -l
password: yoursecrets
[root@Lenovo~]#
[root@Lenovo~]# fdisk -l
出现类似下面的信息(以下提示信息仅供参考,有的并非本人实际 *** 作时的屏幕显示,但意思是一样 的):
写道
Disk/dev/sda: 10.7 GB, 10737418240 bytes
255heads, 63 sectors/track, 1305 cylinders
Units= cylinders of 16065 * 512 = 8225280 bytes
Diskidentifier: 0x0007d856
DeviceBoot Start End Blocks Id System
/dev/sda1 * 1 25 200781 83 Linux
/dev/sda2 26 1305 10281600 8e LinuxLVM
Disk /dev/sdb: 2147 MB, 2147483648 bytes <=新硬盘
255heads, 63 sectors/track, 261 cylinders
Units= cylinders of 16065 * 512 = 8225280 bytes
Diskidentifier: 0x00000000
Disk /dev/sdb doesn't contain a validpartition table
4、 用 fdisk 对硬盘进行分区
写道
[root@Lenovo~]#fdisk /dev/sdb
Devicecontains neither a valid DOS partition table, nor Sun, SGI or OSF disklabel
Buildinga new DOS disklabel with disk identifier 0x623223a1.
Changeswill remain in memory only, until you decide to write them.
Afterthat, of course, the previous content won't be recoverable.
Warning: invalid flag 0x0000 ofpartition table 4 will be corrected by w(rite)
Command (m for help): p <=显示信息
Disk /dev/sdb: 1002.2 GB, 10*** bytes
255heads, 63 sectors/track, 121601 cylinders
Units= cylinders of 16065 * 512 = 8225280 bytes
Diskidentifier: 0x623223a1
DeviceBoot Start End Blocks Id System
Command (m for help): n <=新建分区
Commandaction
e extended
p primarypartition (1-4)
p <=新建主分区
Partitionnumber (1-4): 1 <=分区号为1,即/dev/sdb1
Firstcylinder (1-261, default 1): 回车取默认值
Usingdefault value 1
Lastcylinder or +size or +sizeM or +sizeK (1-261, default 261): 回车取默认值
Usingdefault value 261
Command (m for help): p <=显示分区信息
Disk /dev/sdb: 2147 MB, 2147483648 bytes
255heads, 63 sectors/track, 261 cylinders
Units= cylinders of 16065 * 512 = 8225280 bytes
Diskidentifier: 0x623223a1
DeviceBoot Start End Blocks Id System
/dev/sdb1 1 261 2096451 83 Linux
Command (m for help): w <=保存退出
Thepartition table has been altered!
Callingioctl() to re-read partition table.
Syncingdisks.
5、格式化分区
写道
# mkfs.ext4 -L disk2 /dev/sdb1 --格式化的同时给新硬盘加标签为 disk2
或者 mkfs.ext4 /dev/sdb1 --只格式化但不加标签
单独加标签的命令是: # e2label /dev/sdb1 /disk2
6、创建挂载点
写道
[root@Lenovo~]# mkdir /disk2
7、设置/dev/fstab 以便开机时自动挂载分区:
写道
[root@Lenovo~]# vi /etc/fstab
添加一行:
/dev/sdb1 /disk2 ext4 auto 1 2
若一次性手动挂载分区 ,使用命令: #mount /dev/sdb1 /disk2/
8、设置新硬盘或分区的读写权限:
# chmod a+w /disk2
这样所有计算机的用户都可以读写该分区,即/disk2盘了
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