Linux磁盘分区(二):删除
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原创作品,出自 “深蓝的blog” 博客,欢迎转载,转载时请务必注明出处(http://blog.csdn.net/huangyanlong)。
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续接上篇:“举例:将sdb1格式化为ext3文件系统”点击打开链接
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Linux硬盘分区(二):删除
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举例:对sdb1进行umount
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- [root@hyl /]# df -h
- Filesystem Size Used Avail Use% Mounted on
- /dev/sda1 9.7G 5.4G 3.9G 59% /
- /dev/sda3 35G 17G 17G 50% /home
- tmpfs 1006M 0 1006M 0% /dev/shm
- /dev/sdb1 1.9G 35M 1.8G 2% /data1
- [root@hyl /]# umount /data1
- [root@hyl /]# df -h
- Filesystem Size Used Avail Use% Mounted on
- /dev/sda1 9.7G 5.4G 3.9G 59% /
- /dev/sda3 35G 17G 17G 50% /home
- tmpfs 1006M 0 1006M 0% /dev/shm
- [root@hyl /]# fdisk -l
- Disk /dev/sda: 53.6 GB, 53687091200 bytes
- 255 heads, 63 sectors/track, 6527 cylinders
- Units = cylinders of 16065 * 512 = 8225280 bytes
- Device Boot Start End Blocks Id System
- /dev/sda1 * 1 1305 10482381 83 Linux
- /dev/sda2 1306 1827 4192965 82 Linux swap / Solaris
- /dev/sda3 1828 6527 37752750 83 Linux
- Disk /dev/sdb: 10.7 GB, 10737418240 bytes
- 255 heads, 63 sectors/track, 1305 cylinders
- Units = cylinders of 16065 * 512 = 8225280 bytes
- Device Boot Start End Blocks Id System
- /dev/sdb1 1 250 2008093+ 83 Linux
- /dev/sdb2 251 500 2008125 83 Linux
- /dev/sdb3 501 750 2008125 83 Linux
- /dev/sdb4 751 1305 4458037+ 5 Extended
- /dev/sdb5 751 875 1004031 83 Linux
- /dev/sdb6 876 1000 1004031 83 Linux
- /dev/sdb7 1001 1305 2449881 83 Linux
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对第二块磁盘操作(即/dev/sdb)
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- [root@hyl /]# fdisk /dev/sdb
- The number of cylinders for this disk is set to 1305.
- 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): 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): p
- Disk /dev/sdb: 10.7 GB, 10737418240 bytes
- 255 heads, 63 sectors/track, 1305 cylinders
- Units = cylinders of 16065 * 512 = 8225280 bytes
- Device Boot Start End Blocks Id System
- /dev/sdb1 1 250 2008093+ 83 Linux
- /dev/sdb2 251 500 2008125 83 Linux
- /dev/sdb3 501 750 2008125 83 Linux
- /dev/sdb4 751 1305 4458037+ 5 Extended
- /dev/sdb5 751 875 1004031 83 Linux
- /dev/sdb6 876 1000 1004031 83 Linux
- /dev/sdb7 1001 1305 2449881 83 Linux
- </span>
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删除分区:sdb1及其它
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- Command (m for help): d
- --输入删除指令
- Partition number (1-7): 1
- --输入删除的分区号
- Command (m for help): p
- --打印分区表
- Disk /dev/sdb: 10.7 GB, 10737418240 bytes
- 255 heads, 63 sectors/track, 1305 cylinders
- Units = cylinders of 16065 * 512 = 8225280 bytes
- Device Boot Start End Blocks Id System
- /dev/sdb2 251 500 2008125 83 Linux
- /dev/sdb3 501 750 2008125 83 Linux
- /dev/sdb4 751 1305 4458037+ 5 Extended
- /dev/sdb5 751 875 1004031 83 Linux
- /dev/sdb6 876 1000 1004031 83 Linux
- /dev/sdb7 1001 1305 2449881 83 Linux
- --可以看到sdb1已经被删除了
- --接下来同理,删除其它分区
- Command (m for help): d
- Partition number (1-7): 2
- Command (m for help): d
- Partition number (1-7): 3
- Command (m for help): d
- Partition number (1-7): 4
- Command (m for help): p
- Disk /dev/sdb: 10.7 GB, 10737418240 bytes
- 255 heads, 63 sectors/track, 1305 cylinders
- Units = cylinders of 16065 * 512 = 8225280 bytes
- Device Boot Start End Blocks Id System
- Command (m for help): w
- --保存退出
- The partition table has been altered!
- Calling ioctl() to re-read partition table.
- Syncing disks.
- --现在可以移除磁盘了
***********************************************声明************************************************
原创作品,出自 “深蓝的blog” 博客,欢迎转载,转载时请务必注明出处(http://blog.csdn.net/huangyanlong)。
表述有错误之处,请您留言或邮件(hyldba@163.com)指明,不胜感激。
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