Linux添加硬盘（硬盘没有充分使用问题）

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在Linux系统中，通过fdisk查看到硬盘/dev/sda存在未使用的空间。尝试新增分区，但提示无免费扇区可用。接着对sda5分区进行格式化为ext3类型，并成功创建文件系统。最后将/dev/sda5挂载到/data，通过df -k和df -h确认已充分利用了硬盘空间。

[root@localhost ~]# fdisk -l

Disk /dev/sda: 536.8 GB, 536870912000 bytes
255 heads, 63 sectors/track, 65270 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes

   Device Boot      Start         End      Blocks   Id System
/dev/sda1   *           1          13      104391   83 Linux
/dev/sda2              14        2624    20972857+ 83 Linux
/dev/sda3            2625        3929    10482412+ 82 Linux swap / Solaris
/dev/sda4            3930       65270   492721582+   5 Extended
/dev/sda5            3930       65270   492721551   83 Linux
[root@localhost ~]# fdisk /dev/sda

The number of cylinders for this disk is set to 65270.
There is nothing wrong with that, but this is larger than 1024,
and could in certain setups cause problems with:
1) software that runs at boot time (e.g., old versions of LILO)
2) booting and partitioning software from other OSs
(e.g., DOS FDISK, OS/2 FDISK)

Command (m for help): n
No free sectors available

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): n
No free sectors available

Command (m for help): q

[root@localhost ~]# mkfs -t ext3 /dev/sda5       //格式化sda5分区
mke2fs 1.39 (29-May-2006)
Filesystem label=
OS type: Linux
Block size=4096 (log=2)
Fragment size=4096 (log=2)
61603840 inodes, 123180387 blocks
6159019 blocks (5.00%) reserved for the super user
First data block=0
Maximum filesystem blocks=4294967296
3760 block groups
32768 blocks per group, 32768 fragments per group
16384 inodes per group
Superblock backups stored on blocks:
      32768, 98304, 163840, 229376, 294912, 819200, 884736, 1605632, 2654208,
      4096000, 7962624, 11239424, 20480000, 23887872, 71663616, 78675968,
      102400000

Writing inode tables: done
Creating journal (32768 blocks): done
Writing superblocks and filesystem accounting information: done
done

This filesystem will be automatically checked every 38 mounts or
180 days, whichever comes first. Use tune2fs -c or -i to override.
[root@localhost ~]# done
-bash: syntax error near unexpected token `done'
[root@localhost ~]# ls
anaconda-ks.cfg index.html    index.html.2 index_p.jsp install.log.syslog
Desktop          index.html.1 index.html.3 install.log szxx_09.gif
[root@localhost ~]# mount /dev/sda5 /data       //重新挂载分区，如果要挂载新文件名要先创建文件系统
[root@localhost ~]# df-k
-bash: df-k: command not found
[root@localhost ~]# df -k
驿欢绯荤?              1K-?       宸茬?    瀵绋宸茬? 骅浇绻
/dev/sda2             20315844   4980560 14286644 26% /
/dev/sda1               101086     11956     83911 13% /boot
tmpfs                  8218456         0   8218456   0% /dev/shm
/dev/sda5            484988756    202800 460149880   1% /data
[root@localhost ~]# df -h
驿欢绯荤?             瀹归宸茬?瀵绋宸茬? 骅浇绻
/dev/sda2              20G 4.8G   14G 26% /
/dev/sda1              99M   12M   82M 13% /boot
tmpfs                 7.9G     0 7.9G   0% /dev/shm
/dev/sda5             463G 199M 439G   1% /data   原来只用了49G，现在充分利用上了